diff --git a/packages/manager/.changeset/pr-10366-upcoming-features-1712781737734.md b/packages/manager/.changeset/pr-10366-upcoming-features-1712781737734.md
new file mode 100644
index 00000000000..cc324ed2626
--- /dev/null
+++ b/packages/manager/.changeset/pr-10366-upcoming-features-1712781737734.md
@@ -0,0 +1,5 @@
+---
+"@linode/manager": Upcoming Features
+---
+
+Invalidate Placement Group queries on Linode create & delete mutations ([#10366](https://github.com/linode/manager/pull/10366))
diff --git a/packages/manager/src/queries/linodes/linodes.ts b/packages/manager/src/queries/linodes/linodes.ts
index 391c4870271..9f376fbbe6f 100644
--- a/packages/manager/src/queries/linodes/linodes.ts
+++ b/packages/manager/src/queries/linodes/linodes.ts
@@ -36,6 +36,7 @@ import {
   useQueryClient,
 } from '@tanstack/react-query';
 
+import { placementGroupQueries } from 'src/queries/placementGroups';
 import { manuallySetVPCConfigInterfacesToActive } from 'src/utilities/configs';
 
 import { accountQueries } from '../account/queries';
@@ -138,12 +139,30 @@ export const useLinodeLishTokenQuery = (id: number) => {
 
 export const useDeleteLinodeMutation = (id: number) => {
   const queryClient = useQueryClient();
+  const linode = queryClient.getQueryData<Linode>([
+    queryKey,
+    'linode',
+    id,
+    'details',
+  ]);
+  const placementGroupId = linode?.placement_group?.id;
+
   return useMutation<{}, APIError[]>(() => deleteLinode(id), {
     onSuccess() {
       queryClient.removeQueries([queryKey, 'linode', id]);
       queryClient.invalidateQueries([queryKey, 'paginated']);
       queryClient.invalidateQueries([queryKey, 'all']);
       queryClient.invalidateQueries([queryKey, 'infinite']);
+
+      // If the linode is assigned to a placement group,
+      // we need to invalidate the placement group queries
+      if (placementGroupId) {
+        queryClient.invalidateQueries(
+          placementGroupQueries.placementGroup(placementGroupId).queryKey
+        );
+        queryClient.invalidateQueries(placementGroupQueries.all.queryKey);
+        queryClient.invalidateQueries(placementGroupQueries.paginated._def);
+      }
     },
   });
 };
@@ -167,6 +186,17 @@ export const useCreateLinodeMutation = () => {
         // they are derived from Linode configs.
         queryClient.invalidateQueries(vlanQueries._def);
       }
+
+      // If the Linode is assigned to a placement group on creation,
+      // we need to invalidate the placement group queries
+      if (variables.placement_group?.id) {
+        queryClient.invalidateQueries(
+          placementGroupQueries.placementGroup(variables.placement_group.id)
+            .queryKey
+        );
+        queryClient.invalidateQueries(placementGroupQueries.all.queryKey);
+        queryClient.invalidateQueries(placementGroupQueries.paginated._def);
+      }
     },
   });
 };