diff --git a/src/registrar/admin.py b/src/registrar/admin.py
index 0f682e76f..c056dc00d 100644
--- a/src/registrar/admin.py
+++ b/src/registrar/admin.py
@@ -9,6 +9,8 @@ from django.db.models.functions import Concat, Coalesce
 from django.http import HttpResponseRedirect
 from django.shortcuts import redirect
 from django_fsm import get_available_FIELD_transitions, FSMField
+from registrar.models.domain_group import DomainGroup
+from registrar.models.suborganization import Suborganization
 from waffle.decorators import flag_is_active
 from django.contrib import admin, messages
 from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
@@ -2686,21 +2688,33 @@ class VerifiedByStaffAdmin(ListHeaderAdmin):
         obj.requestor = request.user if request.user.is_authenticated else None
         super().save_model(request, obj, form, change)
 
-
 class PortfolioAdmin(ListHeaderAdmin):
-    # NOTE: these are just placeholders.  Not part of ACs (haven't been defined yet).  Update in future tickets.
+
+    change_form_template = "django/admin/portfolio_change_form.html"
+
     list_display = ("organization_name", "federal_agency", "creator")
     search_fields = ["organization_name"]
     search_help_text = "Search by organization name."
-    # readonly_fields = [
-    #     "requestor",
-    # ]
+   
     # Creates select2 fields (with search bars)
     autocomplete_fields = [
         "creator",
         "federal_agency",
     ]
 
+    def change_view(self, request, object_id, form_url="", extra_context=None):
+        """Add related suborganizations and domain groups"""
+        obj = self.get_object(request, object_id)
+
+        # ---- Domain Groups
+        domain_groups = DomainGroup.objects.filter(portfolio=obj)
+
+        # ---- Suborganizations
+        suborganizations = Suborganization.objects.filter(portfolio=obj)
+
+        extra_context = {"domain_groups": domain_groups, "suborganizations": suborganizations}
+        return super().change_view(request, object_id, form_url, extra_context)
+
     def save_model(self, request, obj, form, change):
 
         if obj.creator is not None:
diff --git a/src/registrar/templates/django/admin/portfolio_change_form.html b/src/registrar/templates/django/admin/portfolio_change_form.html
new file mode 100644
index 000000000..edd83eea9
--- /dev/null
+++ b/src/registrar/templates/django/admin/portfolio_change_form.html
@@ -0,0 +1,34 @@
+{% extends 'django/admin/email_clipboard_change_form.html' %}
+{% load i18n static %}
+
+{% block after_related_objects %}
+    <div class="module aligned padding-3">
+        <h2>Associated domain groups and suborganizations</h2>
+        <div class="grid-row grid-gap mobile:padding-x-1 desktop:padding-x-4">
+            <div class="mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-4">
+                <h3>Domain groups</h3>
+                <ul class="margin-0 padding-0">
+                {% for domain_group in domain_groups %}
+                    <li>
+                        <a href="{% url 'admin:registrar_domaingroup_change' domain_group.pk %}">
+                            {{ domain_group.name }}
+                        </a>
+                    </li>
+                {% endfor %}
+                </ul>
+            </div>    
+            <div class="mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-4">
+                <h3>Suborganizations</h3>
+                <ul class="margin-0 padding-0">
+                {% for suborganization in suborganizations %}
+                    <li>
+                        <a href="{% url 'admin:registrar_suborganization_change' suborganization.pk %}">
+                            {{ suborganization.name }}
+                        </a>
+                    </li>
+                {% endfor %}
+                </ul>
+            </div>
+        </div>
+    </div>
+{% endblock %}