diff --git a/change/@fluentui-fluent2-theme-0e6007c6-6d99-4aaf-afc1-a22793e47026.json b/change/@fluentui-fluent2-theme-0e6007c6-6d99-4aaf-afc1-a22793e47026.json
new file mode 100644
index 0000000000000..eb6395257c972
--- /dev/null
+++ b/change/@fluentui-fluent2-theme-0e6007c6-6d99-4aaf-afc1-a22793e47026.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "fix: Add all spinner sizes for fluent2 theme in v8",
+  "packageName": "@fluentui/fluent2-theme",
+  "email": "mifraser@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/fluent2-theme/src/componentStyles/Spinner.styles.ts b/packages/fluent2-theme/src/componentStyles/Spinner.styles.ts
index fdde25a8c11a4..cd26b72473a12 100644
--- a/packages/fluent2-theme/src/componentStyles/Spinner.styles.ts
+++ b/packages/fluent2-theme/src/componentStyles/Spinner.styles.ts
@@ -21,6 +21,14 @@ export function getSpinnerStyles(
         height: 32,
         width: 32,
       },
+      size === SpinnerSize.small && {
+        height: 28,
+        width: 28,
+      },
+      size === SpinnerSize.xSmall && {
+        height: 24,
+        width: 24,
+      },
     ],
   };