diff --git a/.changeset/young-points-drop.md b/.changeset/young-points-drop.md
new file mode 100644
index 0000000000..4309d54c2c
--- /dev/null
+++ b/.changeset/young-points-drop.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-backend-module-msgraph': patch
+---
+
+Increased default page size to 999 (from 100) to reduce the number of calls made to the Microsoft Graph API.
diff --git a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/client.ts b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/client.ts
index a1fc77b4fd..fd640e70ba 100644
--- a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/client.ts
+++ b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/client.ts
@@ -348,8 +348,16 @@ export class MicrosoftGraphClient {
    * @param groupId - The unique identifier for the `Group` resource
    *
    */
-  async *getGroupMembers(groupId: string): AsyncIterable<GroupMember> {
-    yield* this.requestCollection<GroupMember>(`groups/${groupId}/members`);
+  async *getGroupMembers(
+    groupId: string,
+    query?: ODataQuery,
+    queryMode?: 'basic' | 'advanced',
+  ): AsyncIterable<GroupMember> {
+    yield* this.requestCollection<GroupMember>(
+      `groups/${groupId}/members`,
+      query,
+      queryMode,
+    );
   }
 
   /**
diff --git a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.test.ts b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.test.ts
index bafb2ecaad..0f9ddb0c13 100644
--- a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.test.ts
+++ b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.test.ts
@@ -140,6 +140,7 @@ describe('read microsoft graph', () => {
       expect(client.getUsers).toHaveBeenCalledWith(
         {
           filter: 'accountEnabled eq true',
+          top: 999,
         },
         undefined,
       );
@@ -186,6 +187,7 @@ describe('read microsoft graph', () => {
       expect(client.getUsers).toHaveBeenCalledWith(
         {
           filter: 'accountEnabled eq true',
+          top: 999,
         },
         'advanced',
       );
@@ -228,6 +230,7 @@ describe('read microsoft graph', () => {
         {
           expand: 'manager',
           filter: 'accountEnabled eq true',
+          top: 999,
         },
         undefined,
       );
@@ -278,11 +281,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq true',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
 
       expect(client.getUserProfile).toHaveBeenCalledTimes(1);
       expect(client.getUserProfile).toHaveBeenCalledWith('userid', {
@@ -338,11 +344,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq true',
+          top: 999,
         },
         'advanced',
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
 
       expect(client.getUserProfile).toHaveBeenCalledTimes(1);
       expect(client.getUserProfile).toHaveBeenCalledWith('userid', {
@@ -390,11 +399,14 @@ describe('read microsoft graph', () => {
         {
           expand: 'member',
           filter: 'securityEnabled eq true',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
 
       expect(client.getUserProfile).toHaveBeenCalledTimes(1);
       expect(client.getUserProfile).toHaveBeenCalledWith('userid', {
@@ -527,11 +539,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
       // TODO: Loading groups photos doesn't work right now as Microsoft Graph
       // doesn't allows this yet
       // expect(client.getGroupPhotoWithSizeLimit).toBeCalledTimes(1);
@@ -603,11 +618,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         'advanced',
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
       // TODO: Loading groups photos doesn't work right now as Microsoft Graph
       // doesn't allows this yet
       // expect(client.getGroupPhotoWithSizeLimit).toBeCalledTimes(1);
@@ -680,11 +698,14 @@ describe('read microsoft graph', () => {
         {
           expand: 'member',
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
       // TODO: Loading groups photos doesn't work right now as Microsoft Graph
       // doesn't allows this yet
       // expect(client.getGroupPhotoWithSizeLimit).toBeCalledTimes(1);
@@ -750,11 +771,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq true',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroupMembers).toHaveBeenCalledTimes(1);
-      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid');
+      expect(client.getGroupMembers).toHaveBeenCalledWith('groupid', {
+        top: 999,
+      });
     });
   });
 
@@ -887,6 +911,7 @@ describe('read microsoft graph', () => {
       expect(client.getUsers).toHaveBeenCalledWith(
         {
           filter: undefined,
+          top: 999,
         },
         undefined,
       );
@@ -894,6 +919,7 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         undefined,
       );
@@ -925,6 +951,7 @@ describe('read microsoft graph', () => {
         {
           expand: 'manager',
           filter: 'accountEnabled eq true',
+          top: 999,
         },
         undefined,
       );
@@ -932,6 +959,7 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         undefined,
       );
@@ -960,6 +988,7 @@ describe('read microsoft graph', () => {
       expect(client.getUsers).toHaveBeenCalledWith(
         {
           select: ['mail'],
+          top: 999,
         },
         undefined,
       );
@@ -994,12 +1023,14 @@ describe('read microsoft graph', () => {
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'name eq backstage-group',
+          top: 999,
         },
         undefined,
       );
       expect(client.getGroups).toHaveBeenCalledWith(
         {
           filter: 'securityEnabled eq false',
+          top: 999,
         },
         undefined,
       );
diff --git a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.ts b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.ts
index 0ed411bfea..2541416777 100644
--- a/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.ts
+++ b/plugins/catalog-backend-module-msgraph/src/microsoftGraph/read.ts
@@ -37,6 +37,8 @@ import {
   UserTransformer,
 } from './types';
 
+const PAGE_SIZE = 999;
+
 /**
  * The default implementation of the transformation from a graph user entry to
  * a User entity.
@@ -107,6 +109,7 @@ export async function readMicrosoftGraphUsers(
       filter: options.userFilter,
       expand: options.userExpand,
       select: options.userSelect,
+      top: PAGE_SIZE,
     },
     options.queryMode,
   )) {
@@ -172,13 +175,16 @@ export async function readMicrosoftGraphUsersInGroups(
       expand: options.groupExpand,
       search: options.userGroupMemberSearch,
       filter: options.userGroupMemberFilter,
+      top: PAGE_SIZE,
     },
     options.queryMode,
   )) {
     // Process all groups in parallel, otherwise it can take quite some time
     userGroupMemberPromises.push(
       limiter(async () => {
-        for await (const member of client.getGroupMembers(group.id!)) {
+        for await (const member of client.getGroupMembers(group.id!, {
+          top: PAGE_SIZE,
+        })) {
           if (!member.id) {
             continue;
           }
@@ -380,6 +386,7 @@ export async function readMicrosoftGraphGroups(
       search: options?.groupSearch,
       filter: options?.groupFilter,
       select: options?.groupSelect,
+      top: PAGE_SIZE,
     },
     options?.queryMode,
   )) {
@@ -401,7 +408,9 @@ export async function readMicrosoftGraphGroups(
           return;
         }
 
-        for await (const member of client.getGroupMembers(group.id!)) {
+        for await (const member of client.getGroupMembers(group.id!, {
+          top: PAGE_SIZE,
+        })) {
           if (!member.id) {
             continue;
           }