diff --git a/src/Altinn.App.Core/Models/Logo.cs b/src/Altinn.App.Core/Models/Logo.cs
index f10846d53..66e03cd87 100644
--- a/src/Altinn.App.Core/Models/Logo.cs
+++ b/src/Altinn.App.Core/Models/Logo.cs
@@ -21,5 +21,11 @@ public class Logo
         [JsonProperty(PropertyName = "source")]
         public string? Source { get; set; }
 
+        /// <summary>
+        /// Specifies the size of the logo. Can have the values
+        /// 'small', 'medium', or 'large'
+        /// </summary>
+        [JsonProperty(PropertyName = "size")]
+        public string Size { get; set; } = "small";
     }
 }
diff --git a/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs b/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
index e9f9b191c..140da41e2 100644
--- a/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
+++ b/test/Altinn.App.Core.Tests/Internal/App/AppMedataTest.cs
@@ -451,7 +451,8 @@ public async Task GetApplicationMetadata_logo_can_intstantiate_with_source_and_D
                 Logo = new Logo
                 {
                     Source = "org",
-                    DisplayAppOwnerNameInHeader = true
+                    DisplayAppOwnerNameInHeader = true,
+                    Size = "medium"
                 },
                 Features = enabledFrontendFeatures
             };
diff --git a/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/logo-org-source.applicationmetadata.json b/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/logo-org-source.applicationmetadata.json
index 8a6c34aff..a9782fe64 100644
--- a/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/logo-org-source.applicationmetadata.json
+++ b/test/Altinn.App.Core.Tests/Internal/App/TestData/AppMetadata/logo-org-source.applicationmetadata.json
@@ -35,6 +35,7 @@
   },
   "logo": {
     "displayAppOwnerNameInHeader": true,
-    "source": "org"
+    "source": "org",
+    "size": "medium"
   }
 }