diff --git a/ietf/api/urls_rpc.py b/ietf/api/urls_rpc.py
index 0e3b176710..7a0223b414 100644
--- a/ietf/api/urls_rpc.py
+++ b/ietf/api/urls_rpc.py
@@ -5,10 +5,11 @@
 from ietf.utils.urls import url
 
 urlpatterns = [
-    url(r'^doc/create_demo_draft/$', views_rpc.create_demo_draft),
-    url(r'^doc/drafts/(?P<doc_id>[0-9]+)$', views_rpc.rpc_draft),
-    url(r'^doc/submitted_to_rpc/$', views_rpc.submitted_to_rpc),
-    url(r'^person/create_demo_person/$', views_rpc.create_demo_person),
-    url(r'^person/(?P<person_id>[0-9]+)$', views_rpc.rpc_person),
-    url(r'^persons/$', views_rpc.rpc_persons),
+    url(r"^doc/create_demo_draft/$", views_rpc.create_demo_draft),
+    url(r"^doc/drafts/(?P<doc_id>[0-9]+)$", views_rpc.rpc_draft),
+    url(r"^doc/submitted_to_rpc/$", views_rpc.submitted_to_rpc),
+    url(r"^person/create_demo_person/$", views_rpc.create_demo_person),
+    url(r"^person/(?P<person_id>[0-9]+)$", views_rpc.rpc_person),
+    url(r"^persons/$", views_rpc.rpc_persons),
+    url(r"^subject/(?P<subject_id>[0-9]+)/person/$", views_rpc.rpc_subject_person),
 ]
diff --git a/ietf/api/views_rpc.py b/ietf/api/views_rpc.py
index 38d42ba8da..b689faa281 100644
--- a/ietf/api/views_rpc.py
+++ b/ietf/api/views_rpc.py
@@ -11,6 +11,7 @@
 )
 from django.shortcuts import get_object_or_404
 from django.views.decorators.csrf import csrf_exempt
+from django.contrib.auth.models import User
 
 from ietf.api.ietf_utils import requires_api_token
 from ietf.doc.factories import WgDraftFactory # DO NOT MERGE INTO MAIN
@@ -27,6 +28,22 @@ def rpc_person(request, person_id):
         "plain_name": person.plain_name(),
     })
 
+@csrf_exempt
+@requires_api_token("ietf.api.views_rpc")
+def rpc_subject_person(request, subject_id):
+    try:
+        user_id = int(subject_id)
+    except ValueError:
+        return JsonResponse({"error": "Invalid subject id"}, status=400)
+    try:   
+        user = User.objects.get(pk=user_id)
+    except User.DoesNotExist:
+        return JsonResponse({"error": "Unknown subject"}, status=404)
+    if hasattr(user, "person"):  # test this way to avoid exception on reverse OneToOneField        
+        return rpc_person(request, person_id=user.person.pk)
+    return JsonResponse({"error": "Subject has no person"}, status=404) 
+
+
 @csrf_exempt
 @requires_api_token("ietf.api.views_rpc")
 def rpc_persons(request):
diff --git a/rpcapi.yaml b/rpcapi.yaml
index 1f9c0ef909..66cfa5cbef 100644
--- a/rpcapi.yaml
+++ b/rpcapi.yaml
@@ -128,7 +128,7 @@ paths:
                         application/json:
                             schema:
                                 $ref: '#/components/schemas/SubmittedToQueue'
-
+                                
     /doc/drafts/{docId}:
         get:
             operationId: get_draft_by_id
@@ -151,6 +151,38 @@ paths:
                 '404':
                     description: Not found
 
+    /subject/{subjectId}/person:
+        get:
+            operationId: get_subject_person_by_id
+            summary: Find person for OIDC subject by ID
+            description: Returns a single person
+            parameters:
+                -   name: subjectId
+                    in: path
+                    description: subject ID of person to return
+                    required: true
+                    schema:
+                        type: string
+            responses:
+                '200':
+                    description: OK
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/Person'
+                '400':
+                    description: No such subject or no person for this subject
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/ErrorResponse'
+                '404':
+                    description: No such subject or no person for this subject
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/ErrorResponse'
+
 components: 
     schemas: 
         Person:
@@ -180,6 +212,13 @@ components:
                             submitted: 
                                 type: string
                                 format: date
+        
+        ErrorResponse:
+            type: object
+            properties:
+                error:
+                    type: string
+            
         Draft:
             type: object
             properties: