diff --git a/change/@fluentui-react-avatar-8bdbaa84-a19a-41b4-8e84-12aaaf55bb24.json b/change/@fluentui-react-avatar-8bdbaa84-a19a-41b4-8e84-12aaaf55bb24.json
new file mode 100644
index 0000000000000..24b392b1a54ac
--- /dev/null
+++ b/change/@fluentui-react-avatar-8bdbaa84-a19a-41b4-8e84-12aaaf55bb24.json
@@ -0,0 +1,7 @@
+{
+  "type": "minor",
+  "comment": "feat: Implement avatar context for slot overrides",
+  "packageName": "@fluentui/react-avatar",
+  "email": "lingfangao@hotmail.com",
+  "dependentChangeType": "patch"
+}
diff --git a/change/@fluentui-react-table-f485043e-7e31-4a75-844c-3cecdcd998d6.json b/change/@fluentui-react-table-f485043e-7e31-4a75-844c-3cecdcd998d6.json
new file mode 100644
index 0000000000000..240cb7d2f3c56
--- /dev/null
+++ b/change/@fluentui-react-table-f485043e-7e31-4a75-844c-3cecdcd998d6.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "feat: Use AvatarContext to override avatar size",
+  "packageName": "@fluentui/react-table",
+  "email": "lingfangao@hotmail.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react-components/react-avatar/etc/react-avatar.api.md b/packages/react-components/react-avatar/etc/react-avatar.api.md
index 5c2ada78a5e84..24e29dceca7fc 100644
--- a/packages/react-components/react-avatar/etc/react-avatar.api.md
+++ b/packages/react-components/react-avatar/etc/react-avatar.api.md
@@ -27,6 +27,15 @@ export const Avatar: ForwardRefComponent<AvatarProps>;
 // @public (undocumented)
 export const avatarClassNames: SlotClassNames<AvatarSlots>;
 
+// @internal (undocumented)
+export const AvatarContextProvider: React_2.Provider<AvatarContextValue | undefined>;
+
+// @internal (undocumented)
+export interface AvatarContextValue {
+    // (undocumented)
+    size?: AvatarSizes;
+}
+
 // @public
 export const AvatarGroup: ForwardRefComponent<AvatarGroupProps>;
 
@@ -178,6 +187,9 @@ export const renderAvatarGroupPopover_unstable: (state: AvatarGroupPopoverState,
 // @public (undocumented)
 export const useAvatar_unstable: (props: AvatarProps, ref: React_2.Ref<HTMLElement>) => AvatarState;
 
+// @internal (undocumented)
+export const useAvatarContext: () => AvatarContextValue;
+
 // @public
 export const useAvatarGroup_unstable: (props: AvatarGroupProps, ref: React_2.Ref<HTMLElement>) => AvatarGroupState;
 
diff --git a/packages/react-components/react-avatar/src/components/Avatar/Avatar.types.ts b/packages/react-components/react-avatar/src/components/Avatar/Avatar.types.ts
index 7e4370ed34050..1474b46dda127 100644
--- a/packages/react-components/react-avatar/src/components/Avatar/Avatar.types.ts
+++ b/packages/react-components/react-avatar/src/components/Avatar/Avatar.types.ts
@@ -1,6 +1,11 @@
 import { PresenceBadge } from '@fluentui/react-badge';
 import type { ComponentProps, ComponentState, Slot } from '@fluentui/react-utilities';
 
+/**
+ * Sizes for the avatar
+ */
+export type AvatarSizes = 16 | 20 | 24 | 28 | 32 | 36 | 40 | 48 | 56 | 64 | 72 | 96 | 120 | 128;
+
 export type AvatarSlots = {
   root: Slot<'span'>;
 
@@ -69,11 +74,6 @@ export type AvatarNamedColor =
   | 'platinum'
   | 'anchor';
 
-/**
- * Sizes that can be used for the Avatar
- */
-export type AvatarSizes = 16 | 20 | 24 | 28 | 32 | 36 | 40 | 48 | 56 | 64 | 72 | 96 | 120 | 128;
-
 /**
  * Properties for Avatar
  */
diff --git a/packages/react-components/react-avatar/src/components/Avatar/useAvatar.tsx b/packages/react-components/react-avatar/src/components/Avatar/useAvatar.tsx
index 96cb7692c5a27..7fda29c056d86 100644
--- a/packages/react-components/react-avatar/src/components/Avatar/useAvatar.tsx
+++ b/packages/react-components/react-avatar/src/components/Avatar/useAvatar.tsx
@@ -5,6 +5,7 @@ import type { AvatarNamedColor, AvatarProps, AvatarState } from './Avatar.types'
 import { PersonRegular } from '@fluentui/react-icons';
 import { PresenceBadge } from '@fluentui/react-badge';
 import { useFluent_unstable as useFluent } from '@fluentui/react-shared-contexts';
+import { useAvatarContext } from '../../contexts/AvatarContext';
 
 export const DEFAULT_STRINGS = {
   active: 'active',
@@ -13,7 +14,15 @@ export const DEFAULT_STRINGS = {
 
 export const useAvatar_unstable = (props: AvatarProps, ref: React.Ref<HTMLElement>): AvatarState => {
   const { dir } = useFluent();
-  const { name, size = 32, shape = 'circular', active = 'unset', activeAppearance = 'ring', idForColor } = props;
+  const { size: contextSize } = useAvatarContext();
+  const {
+    name,
+    size = contextSize ?? (32 as const),
+    shape = 'circular',
+    active = 'unset',
+    activeAppearance = 'ring',
+    idForColor,
+  } = props;
   let { color = 'neutral' } = props;
 
   // Resolve 'colorful' to a specific color name
diff --git a/packages/react-components/react-avatar/src/contexts/AvatarContext.ts b/packages/react-components/react-avatar/src/contexts/AvatarContext.ts
new file mode 100644
index 0000000000000..39bb4d84c93f8
--- /dev/null
+++ b/packages/react-components/react-avatar/src/contexts/AvatarContext.ts
@@ -0,0 +1,23 @@
+import * as React from 'react';
+import { AvatarSizes } from '../components/Avatar/Avatar.types';
+
+const avatarContext = React.createContext<AvatarContextValue | undefined>(undefined);
+
+/**
+ * @internal
+ */
+export interface AvatarContextValue {
+  size?: AvatarSizes;
+}
+
+const avatarContextDefaultValue: AvatarContextValue = {};
+
+/**
+ * @internal
+ */
+export const AvatarContextProvider = avatarContext.Provider;
+
+/**
+ * @internal
+ */
+export const useAvatarContext = () => React.useContext(avatarContext) ?? avatarContextDefaultValue;
diff --git a/packages/react-components/react-avatar/src/contexts/index.ts b/packages/react-components/react-avatar/src/contexts/index.ts
index 5316e465d3303..9a81f44d0634d 100644
--- a/packages/react-components/react-avatar/src/contexts/index.ts
+++ b/packages/react-components/react-avatar/src/contexts/index.ts
@@ -1 +1,2 @@
 export * from './AvatarGroupContext';
+export * from './AvatarContext';
diff --git a/packages/react-components/react-avatar/src/index.ts b/packages/react-components/react-avatar/src/index.ts
index b49aba63355af..0dd61eebe1028 100644
--- a/packages/react-components/react-avatar/src/index.ts
+++ b/packages/react-components/react-avatar/src/index.ts
@@ -39,4 +39,10 @@ export {
   useAvatarGroupPopover_unstable,
 } from './AvatarGroupPopover';
 export type { AvatarGroupPopoverProps, AvatarGroupPopoverSlots, AvatarGroupPopoverState } from './AvatarGroupPopover';
-export { AvatarGroupProvider, useAvatarGroupContext_unstable } from './contexts/index';
+export {
+  AvatarGroupProvider,
+  useAvatarGroupContext_unstable,
+  AvatarContextProvider,
+  useAvatarContext,
+} from './contexts/index';
+export type { AvatarContextValue } from './contexts/index';
diff --git a/packages/react-components/react-table/etc/react-table.api.md b/packages/react-components/react-table/etc/react-table.api.md
index 32023ee3e96a1..ffe8ca6bf919c 100644
--- a/packages/react-components/react-table/etc/react-table.api.md
+++ b/packages/react-components/react-table/etc/react-table.api.md
@@ -7,6 +7,7 @@
 /// <reference types="react" />
 
 import { ARIAButtonSlotProps } from '@fluentui/react-aria';
+import type { AvatarSizes } from '@fluentui/react-avatar';
 import type { Checkbox } from '@fluentui/react-checkbox';
 import type { CheckboxProps } from '@fluentui/react-checkbox';
 import type { ComponentProps } from '@fluentui/react-utilities';
@@ -40,7 +41,7 @@ export const renderTableCell_unstable: (state: TableCellState) => JSX.Element;
 export const renderTableCellActions_unstable: (state: TableCellActionsState) => JSX.Element;
 
 // @public
-export const renderTableCellLayout_unstable: (state: TableCellLayoutState) => JSX.Element;
+export const renderTableCellLayout_unstable: (state: TableCellLayoutState, contextValues: TableCellLayoutContextValues) => JSX.Element;
 
 // @public
 export const renderTableHeader_unstable: (state: TableHeaderState) => JSX.Element;
@@ -138,7 +139,9 @@ export type TableCellLayoutSlots = {
 };
 
 // @public
-export type TableCellLayoutState = ComponentState<TableCellLayoutSlots> & Pick<TableCellLayoutProps, 'appearance'>;
+export type TableCellLayoutState = ComponentState<TableCellLayoutSlots> & Pick<TableCellLayoutProps, 'appearance'> & {
+    avatarSize: AvatarSizes | undefined;
+};
 
 // @public
 export type TableCellProps = ComponentProps<TableCellSlots> & {};
diff --git a/packages/react-components/react-table/package.json b/packages/react-components/react-table/package.json
index f34ddcb6a2e02..8760a8c0ef860 100644
--- a/packages/react-components/react-table/package.json
+++ b/packages/react-components/react-table/package.json
@@ -31,6 +31,7 @@
   },
   "dependencies": {
     "@fluentui/react-aria": "^9.2.0",
+    "@fluentui/react-avatar": "^9.1.1",
     "@fluentui/react-checkbox": "^9.0.6",
     "@fluentui/react-icons": "^2.0.175",
     "@fluentui/react-tabster": "^9.1.1",
diff --git a/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.tsx b/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.tsx
index dd3368d98c97e..59c7638e1afc1 100644
--- a/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.tsx
+++ b/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.tsx
@@ -2,6 +2,7 @@ import * as React from 'react';
 import { useTableCellLayout_unstable } from './useTableCellLayout';
 import { renderTableCellLayout_unstable } from './renderTableCellLayout';
 import { useTableCellLayoutStyles_unstable } from './useTableCellLayoutStyles';
+import { useTableCellLayoutContextValues_unstable } from './useTableCellLayoutContextValues';
 import type { TableCellLayoutProps } from './TableCellLayout.types';
 import type { ForwardRefComponent } from '@fluentui/react-utilities';
 
@@ -12,7 +13,7 @@ export const TableCellLayout: ForwardRefComponent<TableCellLayoutProps> = React.
   const state = useTableCellLayout_unstable(props, ref);
 
   useTableCellLayoutStyles_unstable(state);
-  return renderTableCellLayout_unstable(state);
+  return renderTableCellLayout_unstable(state, useTableCellLayoutContextValues_unstable(state));
 });
 
 TableCellLayout.displayName = 'TableCellLayout';
diff --git a/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.types.ts b/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.types.ts
index 0238a65776cdf..1cae8d48f6f9f 100644
--- a/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.types.ts
+++ b/packages/react-components/react-table/src/components/TableCellLayout/TableCellLayout.types.ts
@@ -1,4 +1,11 @@
 import type { ComponentProps, ComponentState, Slot } from '@fluentui/react-utilities';
+import type { AvatarSizes } from '@fluentui/react-avatar';
+
+export type TableCellLayoutContextValues = {
+  avatar: {
+    size?: AvatarSizes;
+  };
+};
 
 export type TableCellLayoutSlots = {
   root: Slot<'div'>;
@@ -34,4 +41,5 @@ export type TableCellLayoutProps = ComponentProps<Partial<TableCellLayoutSlots>>
 /**
  * State used in rendering TableCellLayout
  */
-export type TableCellLayoutState = ComponentState<TableCellLayoutSlots> & Pick<TableCellLayoutProps, 'appearance'>;
+export type TableCellLayoutState = ComponentState<TableCellLayoutSlots> &
+  Pick<TableCellLayoutProps, 'appearance'> & { avatarSize: AvatarSizes | undefined };
diff --git a/packages/react-components/react-table/src/components/TableCellLayout/renderTableCellLayout.tsx b/packages/react-components/react-table/src/components/TableCellLayout/renderTableCellLayout.tsx
index 26c059caee4af..e3f8d155d7a79 100644
--- a/packages/react-components/react-table/src/components/TableCellLayout/renderTableCellLayout.tsx
+++ b/packages/react-components/react-table/src/components/TableCellLayout/renderTableCellLayout.tsx
@@ -1,16 +1,24 @@
 import * as React from 'react';
 import { getSlots } from '@fluentui/react-utilities';
-import type { TableCellLayoutState, TableCellLayoutSlots } from './TableCellLayout.types';
+import { AvatarContextProvider } from '@fluentui/react-avatar';
+import type { TableCellLayoutState, TableCellLayoutSlots, TableCellLayoutContextValues } from './TableCellLayout.types';
 
 /**
  * Render the final JSX of TableCellLayout
  */
-export const renderTableCellLayout_unstable = (state: TableCellLayoutState) => {
+export const renderTableCellLayout_unstable = (
+  state: TableCellLayoutState,
+  contextValues: TableCellLayoutContextValues,
+) => {
   const { slots, slotProps } = getSlots<TableCellLayoutSlots>(state);
 
   return (
     <slots.root {...slotProps.root}>
-      {slots.media && <slots.media {...slotProps.media} />}
+      {slots.media && (
+        <AvatarContextProvider value={contextValues.avatar}>
+          <slots.media {...slotProps.media} />
+        </AvatarContextProvider>
+      )}
       {slots.wrapper && (
         <slots.wrapper {...slotProps.wrapper}>
           {slots.main && <slots.main {...slotProps.main}>{slotProps.root.children}</slots.main>}
diff --git a/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayout.ts b/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayout.ts
index a6a7c8647e134..e8c73c594f1dd 100644
--- a/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayout.ts
+++ b/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayout.ts
@@ -1,6 +1,13 @@
 import * as React from 'react';
 import { getNativeElementProps, resolveShorthand } from '@fluentui/react-utilities';
 import type { TableCellLayoutProps, TableCellLayoutState } from './TableCellLayout.types';
+import { useTableContext } from '../../contexts/tableContext';
+
+const tableAvatarSizeMap = {
+  medium: 32,
+  small: 24,
+  smaller: 20,
+} as const;
 
 /**
  * Create the state required to render TableCellLayout.
@@ -15,6 +22,8 @@ export const useTableCellLayout_unstable = (
   props: TableCellLayoutProps,
   ref: React.Ref<HTMLElement>,
 ): TableCellLayoutState => {
+  const { size } = useTableContext();
+
   return {
     components: {
       root: 'div',
@@ -29,5 +38,6 @@ export const useTableCellLayout_unstable = (
     media: resolveShorthand(props.media),
     description: resolveShorthand(props.description),
     wrapper: resolveShorthand(props.wrapper, { required: !!props.description || !!props.children }),
+    avatarSize: tableAvatarSizeMap[size],
   };
 };
diff --git a/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayoutContextValues.ts b/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayoutContextValues.ts
new file mode 100644
index 0000000000000..271c0cbca8b0e
--- /dev/null
+++ b/packages/react-components/react-table/src/components/TableCellLayout/useTableCellLayoutContextValues.ts
@@ -0,0 +1,17 @@
+import * as React from 'react';
+import type { TableCellLayoutState, TableCellLayoutContextValues } from './TableCellLayout.types';
+
+export function useTableCellLayoutContextValues_unstable(state: TableCellLayoutState): TableCellLayoutContextValues {
+  const { avatarSize } = state;
+
+  const avatar = React.useMemo(
+    () => ({
+      size: avatarSize,
+    }),
+    [avatarSize],
+  );
+
+  return {
+    avatar,
+  };
+}
diff --git a/packages/react-components/react-table/src/stories/Table/SizeSmall.stories.tsx b/packages/react-components/react-table/src/stories/Table/SizeSmall.stories.tsx
index 63c172514a430..7f6558c7465e7 100644
--- a/packages/react-components/react-table/src/stories/Table/SizeSmall.stories.tsx
+++ b/packages/react-components/react-table/src/stories/Table/SizeSmall.stories.tsx
@@ -8,14 +8,14 @@ import {
   DocumentPdfRegular,
   VideoRegular,
 } from '@fluentui/react-icons';
-import { PresenceBadgeStatus, Avatar } from '@fluentui/react-components';
+import { Avatar } from '@fluentui/react-components';
 import { TableBody, TableCell, TableRow, Table, TableHeader, TableHeaderCell } from '../..';
 import { TableCellLayout } from '../../components/TableCellLayout/TableCellLayout';
 
 const items = [
   {
     file: { label: 'Meeting notes', icon: <DocumentRegular /> },
-    author: { label: 'Max Mustermann', status: 'available' },
+    author: { label: 'Max Mustermann', status: 'available' as const },
     lastUpdated: { label: '7h ago', timestamp: 1 },
     lastUpdate: {
       label: 'You edited this',
@@ -24,7 +24,7 @@ const items = [
   },
   {
     file: { label: 'Thursday presentation', icon: <FolderRegular /> },
-    author: { label: 'Erika Mustermann', status: 'busy' },
+    author: { label: 'Erika Mustermann', status: 'busy' as const },
     lastUpdated: { label: 'Yesterday at 1:45 PM', timestamp: 2 },
     lastUpdate: {
       label: 'You recently opened this',
@@ -33,7 +33,7 @@ const items = [
   },
   {
     file: { label: 'Training recording', icon: <VideoRegular /> },
-    author: { label: 'John Doe', status: 'away' },
+    author: { label: 'John Doe', status: 'away' as const },
     lastUpdated: { label: 'Yesterday at 1:45 PM', timestamp: 2 },
     lastUpdate: {
       label: 'You recently opened this',
@@ -42,7 +42,7 @@ const items = [
   },
   {
     file: { label: 'Purchase order', icon: <DocumentPdfRegular /> },
-    author: { label: 'Jane Doe', status: 'offline' },
+    author: { label: 'Jane Doe', status: 'offline' as const },
     lastUpdated: { label: 'Tue at 9:30 AM', timestamp: 3 },
     lastUpdate: {
       label: 'You shared this in a Teams chat',
@@ -75,15 +75,7 @@ export const SizeSmall = () => {
               <TableCellLayout media={item.file.icon}>{item.file.label}</TableCellLayout>
             </TableCell>
             <TableCell>
-              <TableCellLayout
-                media={
-                  <Avatar
-                    name={item.author.label}
-                    badge={{ status: item.author.status as PresenceBadgeStatus }}
-                    size={24}
-                  />
-                }
-              >
+              <TableCellLayout media={<Avatar name={item.author.label} badge={{ status: item.author.status }} />}>
                 {item.author.label}
               </TableCellLayout>
             </TableCell>
diff --git a/packages/react-components/react-table/src/stories/Table/SizeSmaller.stories.tsx b/packages/react-components/react-table/src/stories/Table/SizeSmaller.stories.tsx
index 7d431c1cac5a2..1a4daabf1c913 100644
--- a/packages/react-components/react-table/src/stories/Table/SizeSmaller.stories.tsx
+++ b/packages/react-components/react-table/src/stories/Table/SizeSmaller.stories.tsx
@@ -8,13 +8,13 @@ import {
   DocumentPdfRegular,
   VideoRegular,
 } from '@fluentui/react-icons';
-import { PresenceBadgeStatus, Avatar } from '@fluentui/react-components';
+import { Avatar } from '@fluentui/react-components';
 import { TableBody, TableCell, TableRow, Table, TableHeader, TableHeaderCell, TableCellLayout } from '../..';
 
 const items = [
   {
     file: { label: 'Meeting notes', icon: <DocumentRegular /> },
-    author: { label: 'Max Mustermann', status: 'available' },
+    author: { label: 'Max Mustermann', status: 'available' as const },
     lastUpdated: { label: '7h ago', timestamp: 1 },
     lastUpdate: {
       label: 'You edited this',
@@ -23,7 +23,7 @@ const items = [
   },
   {
     file: { label: 'Thursday presentation', icon: <FolderRegular /> },
-    author: { label: 'Erika Mustermann', status: 'busy' },
+    author: { label: 'Erika Mustermann', status: 'busy' as const },
     lastUpdated: { label: 'Yesterday at 1:45 PM', timestamp: 2 },
     lastUpdate: {
       label: 'You recently opened this',
@@ -32,7 +32,7 @@ const items = [
   },
   {
     file: { label: 'Training recording', icon: <VideoRegular /> },
-    author: { label: 'John Doe', status: 'away' },
+    author: { label: 'John Doe', status: 'away' as const },
     lastUpdated: { label: 'Yesterday at 1:45 PM', timestamp: 2 },
     lastUpdate: {
       label: 'You recently opened this',
@@ -41,7 +41,7 @@ const items = [
   },
   {
     file: { label: 'Purchase order', icon: <DocumentPdfRegular /> },
-    author: { label: 'Jane Doe', status: 'offline' },
+    author: { label: 'Jane Doe', status: 'offline' as const },
     lastUpdated: { label: 'Tue at 9:30 AM', timestamp: 3 },
     lastUpdate: {
       label: 'You shared this in a Teams chat',
@@ -74,15 +74,7 @@ export const SizeSmaller = () => {
               <TableCellLayout media={item.file.icon}>{item.file.label}</TableCellLayout>
             </TableCell>
             <TableCell>
-              <TableCellLayout
-                media={
-                  <Avatar
-                    name={item.author.label}
-                    badge={{ status: item.author.status as PresenceBadgeStatus }}
-                    size={20}
-                  />
-                }
-              >
+              <TableCellLayout media={<Avatar name={item.author.label} badge={{ status: item.author.status }} />}>
                 {item.author.label}
               </TableCellLayout>
             </TableCell>