diff --git a/src/main/java/org/folio/fqm/resource/EntityTypeController.java b/src/main/java/org/folio/fqm/resource/EntityTypeController.java
index 8095ca67..1dfb50bf 100644
--- a/src/main/java/org/folio/fqm/resource/EntityTypeController.java
+++ b/src/main/java/org/folio/fqm/resource/EntityTypeController.java
@@ -31,12 +31,12 @@ public ResponseEntity<EntityType> getEntityType(UUID entityTypeId, Boolean inclu
   }
 
   @Override
-  public ResponseEntity<EntityTypeSummaries> getEntityTypeSummary(List<UUID> entityTypeIds, Boolean includeInaccessible) {
+  public ResponseEntity<EntityTypeSummaries> getEntityTypeSummary(List<UUID> entityTypeIds, Boolean includeInaccessible, Boolean includeAll) {
     Set<UUID> idsSet = entityTypeIds == null ? Set.of() : Set.copyOf(entityTypeIds);
     // Permissions are handled in the service layer// Permissions are handled in the service layer
     return ResponseEntity.ok(
       new EntityTypeSummaries()
-        .entityTypes(entityTypeService.getEntityTypeSummary(idsSet, Boolean.TRUE.equals(includeInaccessible)))
+        .entityTypes(entityTypeService.getEntityTypeSummary(idsSet, Boolean.TRUE.equals(includeInaccessible), Boolean.TRUE.equals(includeAll)))
         .version(migrationService.getLatestVersion())
     );
   }
diff --git a/src/main/java/org/folio/fqm/service/EntityTypeService.java b/src/main/java/org/folio/fqm/service/EntityTypeService.java
index 775cd0bd..ea62bcc2 100644
--- a/src/main/java/org/folio/fqm/service/EntityTypeService.java
+++ b/src/main/java/org/folio/fqm/service/EntityTypeService.java
@@ -72,11 +72,11 @@ public class EntityTypeService {
    * @param entityTypeIds If provided, only the entity types having the provided Ids will be included in the results
    */
   @Transactional(readOnly = true)
-  public List<EntityTypeSummary> getEntityTypeSummary(Set<UUID> entityTypeIds, boolean includeInaccessible) {
+  public List<EntityTypeSummary> getEntityTypeSummary(Set<UUID> entityTypeIds, boolean includeInaccessible, boolean includeAll) {
     Set<String> userPermissions = permissionsService.getUserPermissions();
     return entityTypeRepository
       .getEntityTypeDefinitions(entityTypeIds, null)
-      .filter(entityType -> !Boolean.TRUE.equals(entityType.getPrivate()))
+      .filter(entityType -> includeAll || !Boolean.TRUE.equals(entityType.getPrivate()))
       .filter(entityType -> includeInaccessible || userPermissions.containsAll(permissionsService.getRequiredPermissions(entityType)))
       .map(entityType -> {
         EntityTypeSummary result = new EntityTypeSummary()
diff --git a/src/main/resources/swagger.api/mod-fqm-manager.yaml b/src/main/resources/swagger.api/mod-fqm-manager.yaml
index b6f1be11..60f9f684 100644
--- a/src/main/resources/swagger.api/mod-fqm-manager.yaml
+++ b/src/main/resources/swagger.api/mod-fqm-manager.yaml
@@ -17,6 +17,7 @@ paths:
       parameters:
         - $ref: '#/components/parameters/entity-type-ids'
         - $ref: '#/components/parameters/include-inaccessible'
+        - $ref: '#/components/parameters/include-All'
       responses:
         '200':
           description: 'Entity type summaries'
@@ -135,6 +136,13 @@ components:
       description: Include inaccessible entity types in the result
       schema:
         type: boolean
+    include-All:
+      name: includeAll
+      in: query
+      required: false
+      description: Include all the entity types regardless of being private
+      schema:
+        type: boolean
   schemas:
     errorResponse:
       $ref: schemas/errors.json
diff --git a/src/test/java/org/folio/fqm/controller/EntityTypeControllerTest.java b/src/test/java/org/folio/fqm/controller/EntityTypeControllerTest.java
index ef86fc2b..55a3a6fc 100644
--- a/src/test/java/org/folio/fqm/controller/EntityTypeControllerTest.java
+++ b/src/test/java/org/folio/fqm/controller/EntityTypeControllerTest.java
@@ -106,7 +106,7 @@ void shouldGetEntityTypeSummaryForValidIds() throws Exception {
       .header(XOkapiHeaders.TENANT, "tenant_01")
       .queryParam("ids", id1.toString(), id2.toString());
 
-    when(entityTypeService.getEntityTypeSummary(ids, false)).thenReturn(expectedSummary);
+    when(entityTypeService.getEntityTypeSummary(ids, false, false)).thenReturn(expectedSummary);
     when(migrationService.getLatestVersion()).thenReturn("newest coolest version");
 
     mockMvc
@@ -120,7 +120,7 @@ void shouldGetEntityTypeSummaryForValidIds() throws Exception {
       .andExpect(jsonPath("$.entityTypes.[1].missingPermissions").doesNotExist())
       .andExpect(jsonPath("$._version", is("newest coolest version")));
 
-    verify(entityTypeService, times(1)).getEntityTypeSummary(ids, false);
+    verify(entityTypeService, times(1)).getEntityTypeSummary(ids, false, false);
     verifyNoMoreInteractions(entityTypeService);
   }
 
@@ -131,16 +131,33 @@ void testSummaryIncludesMissingPermissionsIfRequested() throws Exception {
       .header(XOkapiHeaders.TENANT, "tenant_01")
       .queryParam("includeInaccessible", "true");
 
-    when(entityTypeService.getEntityTypeSummary(Set.of(), true)).thenReturn(List.of());
+    when(entityTypeService.getEntityTypeSummary(Set.of(), true, false)).thenReturn(List.of());
 
     // all we really want to check here is that the includeInaccessible parameter is correctly unboxed
     // no sense making fake data to pass through to ourself; that's redundant with shouldGetEntityTypeSummaryForValidIds
     mockMvc.perform(requestBuilder).andExpect(status().isOk());
 
-    verify(entityTypeService, times(1)).getEntityTypeSummary(Set.of(), true);
+    verify(entityTypeService, times(1)).getEntityTypeSummary(Set.of(), true, false);
     verifyNoMoreInteractions(entityTypeService);
   }
 
+  @Test
+  void testSummaryIncludesAllEntityTypesIfRequested() throws Exception {
+    RequestBuilder requestBuilder = MockMvcRequestBuilders
+      .get("/entity-types")
+      .header(XOkapiHeaders.TENANT, "tenant_01")
+      .queryParam("includeAll", "true");
+
+    when(entityTypeService.getEntityTypeSummary(Set.of(), false, true)).thenReturn(List.of());
+
+    mockMvc.perform(requestBuilder)
+      .andExpect(status().isOk());
+
+    verify(entityTypeService, times(1)).getEntityTypeSummary(Set.of(), false, true);
+    verifyNoMoreInteractions(entityTypeService);
+  }
+
+
   @Test
   void shouldReturnEmptyListWhenEntityTypeSummaryNotFound() throws Exception {
     UUID id1 = UUID.randomUUID();
@@ -152,7 +169,7 @@ void shouldReturnEmptyListWhenEntityTypeSummaryNotFound() throws Exception {
       .header(XOkapiHeaders.TENANT, "tenant_01")
       .queryParam("ids", id1.toString(), id2.toString());
 
-    when(entityTypeService.getEntityTypeSummary(ids, false)).thenReturn(expectedSummary);
+    when(entityTypeService.getEntityTypeSummary(ids, false, false)).thenReturn(expectedSummary);
 
     mockMvc.perform(requestBuilder).andExpect(status().isOk()).andExpect(jsonPath("$.entityTypes", is(expectedSummary)));
   }
diff --git a/src/test/java/org/folio/fqm/service/EntityTypeServiceTest.java b/src/test/java/org/folio/fqm/service/EntityTypeServiceTest.java
index e8326dcb..9ff9d1cc 100644
--- a/src/test/java/org/folio/fqm/service/EntityTypeServiceTest.java
+++ b/src/test/java/org/folio/fqm/service/EntityTypeServiceTest.java
@@ -108,7 +108,7 @@ void shouldGetEntityTypeSummaryForValidIds() {
     when(localizationService.getEntityTypeLabel("translation_label_01")).thenReturn("label_01");
     when(localizationService.getEntityTypeLabel("translation_label_02")).thenReturn("label_02");
 
-    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false);
+    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false, false);
 
     assertEquals(expectedSummary, actualSummary, "Expected Summary should equal Actual Summary");
 
@@ -136,7 +136,7 @@ void shouldIncludeCrossTenantEntityTypesWhenInCentralTenant() {
     when(localizationService.getEntityTypeLabel("translation_label_02")).thenReturn("label_02");
     when(crossTenantQueryService.isCentralTenant()).thenReturn(true);
 
-    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false);
+    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false, false);
     assertEquals(expectedSummary, actualSummary);
   }
 
@@ -155,7 +155,7 @@ void testEntityTypeSummaryDoesNotIncludeInaccessibleWhenNotRequested() {
       .then(invocationOnMock -> new HashSet<>(invocationOnMock.<EntityType>getArgument(0).getRequiredPermissions()));
     when(localizationService.getEntityTypeLabel("translation_label_02")).thenReturn("label_02");
 
-    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false);
+    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, false, false);
 
     assertEquals(expectedSummary, actualSummary, "Expected Summary should equal Actual Summary");
 
@@ -185,7 +185,7 @@ void testEntityTypeSummaryIncludesInaccessible() {
     when(localizationService.getEntityTypeLabel("translation_label_01")).thenReturn("label_01");
     when(localizationService.getEntityTypeLabel("translation_label_02")).thenReturn("label_02");
 
-    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, true);
+    List<EntityTypeSummary> actualSummary = entityTypeService.getEntityTypeSummary(ids, true, false);
 
     assertEquals(expectedSummary, actualSummary, "Expected Summary should equal Actual Summary");