diff --git a/nova/api/openstack/placement/handlers/resource_provider.py b/nova/api/openstack/placement/handlers/resource_provider.py
index d8a895e79..703169dd8 100644
--- a/nova/api/openstack/placement/handlers/resource_provider.py
+++ b/nova/api/openstack/placement/handlers/resource_provider.py
@@ -18,6 +18,7 @@ from oslo_serialization import jsonutils
 from oslo_utils import uuidutils
 import webob
 
+from nova.api.openstack.placement import microversion
 from nova.api.openstack.placement import util
 from nova import exception
 from nova.i18n import _
@@ -162,8 +163,11 @@ def list_resource_providers(req):
     a collection of resource providers.
     """
     context = req.environ['placement.context']
+    want_version = req.environ[microversion.MICROVERSION_ENVIRON]
 
     allowed_filters = set(objects.ResourceProviderList.allowed_filters)
+    if not want_version.matches((1, 3)):
+        allowed_filters.remove('member_of')
     passed_filters = set(req.GET.keys())
     invalid_filters = passed_filters - allowed_filters
     if invalid_filters:
@@ -180,7 +184,18 @@ def list_resource_providers(req):
     filters = {}
     for attr in objects.ResourceProviderList.allowed_filters:
         if attr in req.GET:
-            filters[attr] = req.GET[attr]
+            value = req.GET[attr]
+            # special case member_of to always make its value a
+            # list, either by accepting the single value, or if it
+            # starts with 'in:' splitting on ','.
+            # NOTE(cdent): This will all change when we start using
+            # JSONSchema validation of query params.
+            if attr == 'member_of':
+                if value.startswith('in:'):
+                    value = value[3:].split(',')
+                else:
+                    value = [value]
+            filters[attr] = value
     resource_providers = objects.ResourceProviderList.get_all_by_filters(
         context, filters)
 
diff --git a/nova/api/openstack/placement/microversion.py b/nova/api/openstack/placement/microversion.py
index 72c857822..d293dcf1f 100644
--- a/nova/api/openstack/placement/microversion.py
+++ b/nova/api/openstack/placement/microversion.py
@@ -37,6 +37,8 @@ VERSIONS = [
     '1.0',
     '1.1',  # initial support for aggregate.get_aggregates and set_aggregates
     '1.2',  # Adds /resource_classes resource endpoint
+    '1.3',  # Adds 'member_of' query parameter to get resource providers
+            # that are members of any of the listed aggregates
 ]
 
 
diff --git a/nova/api/openstack/placement/rest_api_version_history.rst b/nova/api/openstack/placement/rest_api_version_history.rst
index b500dd1d4..2810af5d6 100644
--- a/nova/api/openstack/placement/rest_api_version_history.rst
+++ b/nova/api/openstack/placement/rest_api_version_history.rst
@@ -44,3 +44,11 @@ The following new routes are added:
 Custom resource classes must begin with the prefix "CUSTOM\_" and contain only
 the letters A through Z, the numbers 0 through 9 and the underscore "\_"
 character.
+
+1.3 member_of query parameter
+-----------------------------
+
+Version 1.3 adds support for listing resource providers that are members of
+any of the list of aggregates provided using a ``member_of`` query parameter:
+
+* /resource_providers?member_of=in:{agg1_uuid},{agg2_uuid},{agg3_uuid}
diff --git a/nova/tests/functional/api/openstack/placement/gabbits/microversion.yaml b/nova/tests/functional/api/openstack/placement/gabbits/microversion.yaml
index 32a4f4fb9..56a6729e1 100644
--- a/nova/tests/functional/api/openstack/placement/gabbits/microversion.yaml
+++ b/nova/tests/functional/api/openstack/placement/gabbits/microversion.yaml
@@ -37,13 +37,13 @@ tests:
   response_strings:
       - "Unacceptable version header: 0.5"
 
-- name: latest microversion is 1.2
+- name: latest microversion is 1.3
   GET: /
   request_headers:
       openstack-api-version: placement latest
   response_headers:
       vary: /OpenStack-API-Version/
-      openstack-api-version: placement 1.2
+      openstack-api-version: placement 1.3
 
 - name: other accept header bad version
   GET: /
diff --git a/nova/tests/functional/api/openstack/placement/gabbits/resource-provider-aggregates.yaml b/nova/tests/functional/api/openstack/placement/gabbits/resource-provider-aggregates.yaml
new file mode 100644
index 000000000..044806803
--- /dev/null
+++ b/nova/tests/functional/api/openstack/placement/gabbits/resource-provider-aggregates.yaml
@@ -0,0 +1,100 @@
+# Tests filtering resource providers by aggregates
+
+fixtures:
+    - APIFixture
+
+defaults:
+    request_headers:
+        x-auth-token: admin
+        content-type: application/json
+        accept: application/json
+        openstack-api-version: placement latest
+
+tests:
+
+- name: post new provider 1
+  POST: /resource_providers
+  data:
+      name: rp_1
+      uuid: 893337e9-1e55-49f0-bcfe-6a2f16fbf2f7
+  status: 201
+
+- name: post new provider 2
+  POST: /resource_providers
+  data:
+      name: rp_2
+      uuid: 5202c48f-c960-4eec-bde3-89c4f22a17b9
+  status: 201
+
+- name: get by aggregates no result
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91'
+  response_json_paths:
+      $.resource_providers: []
+
+- name: associate an aggregate with rp1
+  PUT: /resource_providers/893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/aggregates
+  data:
+      - 83a3d69d-8920-48e2-8914-cadfd8fa2f91
+  status: 200
+
+- name: get by aggregates one result
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91'
+  response_json_paths:
+      $.resource_providers[0].uuid: 893337e9-1e55-49f0-bcfe-6a2f16fbf2f7
+
+- name: get by aggregates one result no in
+  GET: '/resource_providers?member_of=83a3d69d-8920-48e2-8914-cadfd8fa2f91'
+  response_json_paths:
+      $.resource_providers[0].uuid: 893337e9-1e55-49f0-bcfe-6a2f16fbf2f7
+
+- name: associate an aggregate with rp2
+  PUT: /resource_providers/5202c48f-c960-4eec-bde3-89c4f22a17b9/aggregates
+  data:
+      - 83a3d69d-8920-48e2-8914-cadfd8fa2f91
+  status: 200
+
+- name: get by aggregates two result
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91'
+  response_json_paths:
+      $.resource_providers.`len`: 2
+      $.resource_providers[0].uuid: /5202c48f-c960-4eec-bde3-89c4f22a17b9|893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/
+      $.resource_providers[1].uuid: /5202c48f-c960-4eec-bde3-89c4f22a17b9|893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/
+
+- name: associate another aggregate with rp2
+  PUT: /resource_providers/5202c48f-c960-4eec-bde3-89c4f22a17b9/aggregates
+  data:
+      - 99652f11-9f77-46b9-80b7-4b1989be9f8c
+  status: 200
+
+- name: get by both aggregates two
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91,99652f11-9f77-46b9-80b7-4b1989be9f8c'
+  response_json_paths:
+      $.resource_providers.`len`: 2
+      $.resource_providers[0].uuid: /5202c48f-c960-4eec-bde3-89c4f22a17b9|893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/
+      $.resource_providers[1].uuid: /5202c48f-c960-4eec-bde3-89c4f22a17b9|893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/
+
+- name: clear aggregates on rp1
+  PUT: /resource_providers/893337e9-1e55-49f0-bcfe-6a2f16fbf2f7/aggregates
+  data: []
+  status: 200
+
+- name: get by both aggregates one
+  desc: only one result because we disassociated aggregates in the PUT above
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91,99652f11-9f77-46b9-80b7-4b1989be9f8c'
+  response_json_paths:
+      $.resource_providers.`len`: 1
+      $.resource_providers[0].uuid: 5202c48f-c960-4eec-bde3-89c4f22a17b9
+
+- name: error on old microverison
+  GET: '/resource_providers?member_of=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91,99652f11-9f77-46b9-80b7-4b1989be9f8c'
+  request_headers:
+      openstack-api-version: placement 1.1
+  status: 400
+  response_json_paths:
+      $.errors[0].detail: '/Invalid filters: member_of/'
+
+- name: error on bogus query parameter
+  GET: '/resource_providers?assoc_with_aggregate=in:83a3d69d-8920-48e2-8914-cadfd8fa2f91,99652f11-9f77-46b9-80b7-4b1989be9f8c'
+  status: 400
+  response_json_paths:
+      $.errors[0].detail: '/Invalid filters: assoc_with_aggregate/'
diff --git a/releasenotes/notes/placement-api-member-of-d8a08d0d0c5700d7.yaml b/releasenotes/notes/placement-api-member-of-d8a08d0d0c5700d7.yaml
new file mode 100644
index 000000000..7f1045ffc
--- /dev/null
+++ b/releasenotes/notes/placement-api-member-of-d8a08d0d0c5700d7.yaml
@@ -0,0 +1,14 @@
+---
+features:
+  - |
+    A new Placement API microversion 1.3 is added with support for filtering
+    the list of resource providers to include only those resource providers
+    which are members of any of the aggregates listed by uuid in the `member_of`
+    query parameter. The parameter is used when making a
+    `GET /resource_providers` request. The value of the parameter uses the
+    `in:` syntax to provide a list of aggregate uuids as follows::
+
+        /resource_providers?member_of=in:09c931b0-c0d7-4e80-8e01-9e6511db8259,f8ab4fa2-804f-402e-b675-7918bd04b173
+
+    If other filtering query parameters are present, the results are a boolean
+    AND of all the filters.