diff --git a/common/changes/users-petdun-gridAriaProperties_2017-05-01-21-52.json b/common/changes/users-petdun-gridAriaProperties_2017-05-01-21-52.json
new file mode 100644
index 00000000000000..c44ed5a21da848
--- /dev/null
+++ b/common/changes/users-petdun-gridAriaProperties_2017-05-01-21-52.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "DetailsList: Added aria properties `aria-colindex`, `aria-rowindex`, `aria-colcount` and `aria-rowcount` to appropriate sub elements.",
+      "type": "patch"
+    }
+  ],
+  "email": "peterdunlop2519@gmail.com"
+}
diff --git a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsList.tsx b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsList.tsx
index 62d0d1160c8a55..11025d2a1ea565 100644
--- a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsList.tsx
+++ b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsList.tsx
@@ -247,7 +247,7 @@ export class DetailsList extends BaseComponent<IDetailsListProps, IDetailsListSt
         data-is-scrollable='false'
         aria-label={ ariaLabel }
         { ...(shouldApplyApplicationRole ? { role: 'application' } : {}) }>
-        <div role='grid' aria-label={ ariaLabelForGrid }>
+        <div role='grid' aria-label={ ariaLabelForGrid } aria-rowcount={ items ? items.length : 0 } aria-colcount={ adjustedColumns ? adjustedColumns.length : 0 }>
           <div onKeyDown={ this._onHeaderKeyDown } role='presentation'>
             { isHeaderVisible && (
               <DetailsHeader
diff --git a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRow.tsx b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRow.tsx
index 36c4f67883128f..4346de7fc33320 100644
--- a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRow.tsx
+++ b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRow.tsx
@@ -193,6 +193,7 @@ export class DetailsRow extends BaseComponent<IDetailsRowProps, IDetailsRowState
         data-is-focusable={ true }
         data-selection-index={ itemIndex }
         data-item-index={ itemIndex }
+        aria-rowindex={ itemIndex }
         data-is-draggable={ isDraggable }
         draggable={ isDraggable }
         data-automationid='DetailsRow'
diff --git a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRowFields.tsx b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRowFields.tsx
index 083c88f68c9aee..636ceaf5a1726e 100644
--- a/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRowFields.tsx
+++ b/packages/office-ui-fabric-react/src/components/DetailsList/DetailsRowFields.tsx
@@ -36,6 +36,7 @@ export class DetailsRowFields extends BaseComponent<IDetailsRowFieldsProps, IDet
           <div
             key={ columnIndex }
             role={ column.isRowHeader ? 'rowheader' : 'gridcell' }
+            aria-colindex={ columnIndex }
             className={ css('ms-DetailsRow-cell', styles.cell, column.className, {
               'is-multiline': column.isMultiline,
               [styles.isMultiline]: column.isMultiline