diff --git a/src/registrar/admin.py b/src/registrar/admin.py
index 9c721dee4..d1cb287a3 100644
--- a/src/registrar/admin.py
+++ b/src/registrar/admin.py
@@ -2720,6 +2720,14 @@ class WaffleFlagAdmin(FlagAdmin):
         fields = "__all__"
 
 
+class DomainGroupAdmin(ListHeaderAdmin, ImportExportModelAdmin):
+    list_display = ["name", "portfolio"]
+
+
+class SuborganizationAdmin(ListHeaderAdmin, ImportExportModelAdmin):
+    list_display = ["name", "portfolio"]
+
+
 admin.site.unregister(LogEntry)  # Unregister the default registration
 
 admin.site.register(LogEntry, CustomLogEntryAdmin)
@@ -2743,6 +2751,8 @@ admin.site.register(models.DomainRequest, DomainRequestAdmin)
 admin.site.register(models.TransitionDomain, TransitionDomainAdmin)
 admin.site.register(models.VerifiedByStaff, VerifiedByStaffAdmin)
 admin.site.register(models.Portfolio, PortfolioAdmin)
+admin.site.register(models.DomainGroup, DomainGroupAdmin)
+admin.site.register(models.Suborganization, SuborganizationAdmin)
 
 # Register our custom waffle implementations
 admin.site.register(models.WaffleFlag, WaffleFlagAdmin)
diff --git a/src/registrar/migrations/0105_suborganization_domaingroup.py b/src/registrar/migrations/0105_suborganization_domaingroup.py
new file mode 100644
index 000000000..471f9379c
--- /dev/null
+++ b/src/registrar/migrations/0105_suborganization_domaingroup.py
@@ -0,0 +1,41 @@
+# Generated by Django 4.2.10 on 2024-06-21 18:15
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("registrar", "0104_create_groups_v13"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Suborganization",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                ("name", models.CharField(help_text="Suborganization", max_length=1000, unique=True)),
+                ("portfolio", models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to="registrar.portfolio")),
+            ],
+            options={
+                "abstract": False,
+            },
+        ),
+        migrations.CreateModel(
+            name="DomainGroup",
+            fields=[
+                ("id", models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                ("name", models.CharField(help_text="Domain group", unique=True)),
+                ("domains", models.ManyToManyField(blank=True, to="registrar.domaininformation")),
+                ("portfolio", models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to="registrar.portfolio")),
+            ],
+            options={
+                "unique_together": {("name", "portfolio")},
+            },
+        ),
+    ]
diff --git a/src/registrar/migrations/0106_create_groups_v14.py b/src/registrar/migrations/0106_create_groups_v14.py
new file mode 100644
index 000000000..816a49ac8
--- /dev/null
+++ b/src/registrar/migrations/0106_create_groups_v14.py
@@ -0,0 +1,37 @@
+# This migration creates the create_full_access_group and create_cisa_analyst_group groups
+# It is dependent on 0079 (which populates federal agencies)
+# If permissions on the groups need changing, edit CISA_ANALYST_GROUP_PERMISSIONS
+# in the user_group model then:
+# [NOT RECOMMENDED]
+# step 1: docker-compose exec app ./manage.py migrate --fake registrar 0035_contenttypes_permissions
+# step 2: docker-compose exec app ./manage.py migrate registrar 0036_create_groups
+# step 3: fake run the latest migration in the migrations list
+# [RECOMMENDED]
+# Alternatively:
+# step 1: duplicate the migration that loads data
+# step 2: docker-compose exec app ./manage.py migrate
+
+from django.db import migrations
+from registrar.models import UserGroup
+from typing import Any
+
+
+# For linting: RunPython expects a function reference,
+# so let's give it one
+def create_groups(apps, schema_editor) -> Any:
+    UserGroup.create_cisa_analyst_group(apps, schema_editor)
+    UserGroup.create_full_access_group(apps, schema_editor)
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("registrar", "0105_suborganization_domaingroup"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            create_groups,
+            reverse_code=migrations.RunPython.noop,
+            atomic=True,
+        ),
+    ]
diff --git a/src/registrar/models/__init__.py b/src/registrar/models/__init__.py
index b2cffaf32..376739826 100644
--- a/src/registrar/models/__init__.py
+++ b/src/registrar/models/__init__.py
@@ -17,6 +17,8 @@ from .transition_domain import TransitionDomain
 from .verified_by_staff import VerifiedByStaff
 from .waffle_flag import WaffleFlag
 from .portfolio import Portfolio
+from .domain_group import DomainGroup
+from .suborganization import Suborganization
 
 
 __all__ = [
@@ -38,6 +40,8 @@ __all__ = [
     "VerifiedByStaff",
     "WaffleFlag",
     "Portfolio",
+    "DomainGroup",
+    "Suborganization",
 ]
 
 auditlog.register(Contact)
@@ -58,3 +62,5 @@ auditlog.register(TransitionDomain)
 auditlog.register(VerifiedByStaff)
 auditlog.register(WaffleFlag)
 auditlog.register(Portfolio)
+auditlog.register(DomainGroup)
+auditlog.register(Suborganization)
diff --git a/src/registrar/models/domain_group.py b/src/registrar/models/domain_group.py
new file mode 100644
index 000000000..16b1fd203
--- /dev/null
+++ b/src/registrar/models/domain_group.py
@@ -0,0 +1,23 @@
+from django.db import models
+from .utility.time_stamped_model import TimeStampedModel
+
+
+class DomainGroup(TimeStampedModel):
+    """
+    Organized group of domains.
+    """
+
+    class Meta:
+        unique_together = [("name", "portfolio")]
+
+    name = models.CharField(
+        unique=True,
+        help_text="Domain group",
+    )
+
+    portfolio = models.ForeignKey("registrar.Portfolio", on_delete=models.PROTECT)
+
+    domains = models.ManyToManyField("registrar.DomainInformation", blank=True)
+
+    def __str__(self) -> str:
+        return f"{self.name}"
diff --git a/src/registrar/models/suborganization.py b/src/registrar/models/suborganization.py
new file mode 100644
index 000000000..b1e010953
--- /dev/null
+++ b/src/registrar/models/suborganization.py
@@ -0,0 +1,22 @@
+from django.db import models
+from .utility.time_stamped_model import TimeStampedModel
+
+
+class Suborganization(TimeStampedModel):
+    """
+    Suborganization under an organization (portfolio)
+    """
+
+    name = models.CharField(
+        unique=True,
+        max_length=1000,
+        help_text="Suborganization",
+    )
+
+    portfolio = models.ForeignKey(
+        "registrar.Portfolio",
+        on_delete=models.PROTECT,
+    )
+
+    def __str__(self) -> str:
+        return f"{self.name}"