diff --git a/.changeset/fluffy-baboons-sip.md b/.changeset/fluffy-baboons-sip.md
new file mode 100644
index 00000000000..b6151abd1cc
--- /dev/null
+++ b/.changeset/fluffy-baboons-sip.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+SelectPanel: Add `align` prop to `SelectPanel` which determines the alignment of the panel relative to the anchor
diff --git a/packages/react/src/SelectPanel/SelectPanel.docs.json b/packages/react/src/SelectPanel/SelectPanel.docs.json
index b79f85363e0..373e81002e7 100644
--- a/packages/react/src/SelectPanel/SelectPanel.docs.json
+++ b/packages/react/src/SelectPanel/SelectPanel.docs.json
@@ -189,6 +189,12 @@
       "type": "boolean",
       "description": "Whether to disable fullscreen behavior on narrow viewports. When `true`, the panel will maintain its anchored position regardless of viewport size. When `false`, the panel will go fullscreen on narrow viewports (if feature flag is enabled).",
       "defaultValue": "undefined (uses feature flag default)"
+    },
+    {
+      "name": "align",
+      "type": "'start' | 'end' | 'center'",
+      "defaultValue": "'start'",
+      "description": "Determines the alignment of the panel relative to the anchor. Defaults to 'start' which aligns the left edge of the panel with the left edge of the anchor."
     }
   ],
   "subcomponents": []
diff --git a/packages/react/src/SelectPanel/SelectPanel.tsx b/packages/react/src/SelectPanel/SelectPanel.tsx
index 52690350d7e..24473437098 100644
--- a/packages/react/src/SelectPanel/SelectPanel.tsx
+++ b/packages/react/src/SelectPanel/SelectPanel.tsx
@@ -115,7 +115,7 @@ type SelectPanelVariantProps = {variant?: 'anchored'; onCancel?: () => void} | {
 
 export type SelectPanelProps = SelectPanelBaseProps &
   Omit<FilteredActionListProps, 'selectionVariant' | 'variant'> &
-  Pick<AnchoredOverlayProps, 'open' | 'height' | 'width'> &
+  Pick<AnchoredOverlayProps, 'open' | 'height' | 'width' | 'align'> &
   AnchoredOverlayWrapperAnchorProps &
   (SelectPanelSingleSelection | SelectPanelMultiSelection) &
   SelectPanelVariantProps
@@ -182,6 +182,7 @@ function Panel({
   secondaryAction,
   showSelectedOptionsFirst = true,
   disableFullscreenOnNarrow,
+  align,
   ...listProps
 }: SelectPanelProps): JSX.Element {
   const titleId = useId()
@@ -627,6 +628,7 @@ function Panel({
       <AnchoredOverlay
         renderAnchor={renderMenuAnchor}
         anchorRef={anchorRef}
+        align={align}
         open={open}
         onOpen={onOpen}
         onClose={onClose}