diff --git a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.compatibility.json b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.compatibility.json
index 949ee4f97b11ce..f83a76daed7355 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.compatibility.json
+++ b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.compatibility.json
@@ -3407,6 +3407,102 @@
     "any",
     "base"
   ],
+  "maccatalyst": [
+    "maccatalyst",
+    "ios",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst-arm64": [
+    "maccatalyst-arm64",
+    "maccatalyst",
+    "ios-arm64",
+    "ios",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst-x64": [
+    "maccatalyst-x64",
+    "maccatalyst",
+    "ios-x64",
+    "ios",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.13": [
+    "maccatalyst.13",
+    "maccatalyst",
+    "ios",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.13-arm64": [
+    "maccatalyst.13-arm64",
+    "maccatalyst.13",
+    "maccatalyst-arm64",
+    "maccatalyst",
+    "ios-arm64",
+    "ios",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.13-x64": [
+    "maccatalyst.13-x64",
+    "maccatalyst.13",
+    "maccatalyst-x64",
+    "maccatalyst",
+    "ios-x64",
+    "ios",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.14": [
+    "maccatalyst.14",
+    "maccatalyst.13",
+    "maccatalyst",
+    "ios",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.14-arm64": [
+    "maccatalyst.14-arm64",
+    "maccatalyst.14",
+    "maccatalyst.13-arm64",
+    "maccatalyst.13",
+    "maccatalyst-arm64",
+    "maccatalyst",
+    "ios-arm64",
+    "ios",
+    "unix-arm64",
+    "unix",
+    "any",
+    "base"
+  ],
+  "maccatalyst.14-x64": [
+    "maccatalyst.14-x64",
+    "maccatalyst.14",
+    "maccatalyst.13-x64",
+    "maccatalyst.13",
+    "maccatalyst-x64",
+    "maccatalyst",
+    "ios-x64",
+    "ios",
+    "unix-x64",
+    "unix",
+    "any",
+    "base"
+  ],
   "ol": [
     "ol",
     "rhel",
diff --git a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.json b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.json
index b309f20a475fbb..c714ca1a553429 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.json
+++ b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtime.json
@@ -1421,6 +1421,57 @@
         "linuxmint.19.1-x64"
       ]
     },
+    "maccatalyst": {
+      "#import": [
+        "ios"
+      ]
+    },
+    "maccatalyst-arm64": {
+      "#import": [
+        "maccatalyst",
+        "ios-arm64"
+      ]
+    },
+    "maccatalyst-x64": {
+      "#import": [
+        "maccatalyst",
+        "ios-x64"
+      ]
+    },
+    "maccatalyst.13": {
+      "#import": [
+        "maccatalyst"
+      ]
+    },
+    "maccatalyst.13-arm64": {
+      "#import": [
+        "maccatalyst.13",
+        "maccatalyst-arm64"
+      ]
+    },
+    "maccatalyst.13-x64": {
+      "#import": [
+        "maccatalyst.13",
+        "maccatalyst-x64"
+      ]
+    },
+    "maccatalyst.14": {
+      "#import": [
+        "maccatalyst.13"
+      ]
+    },
+    "maccatalyst.14-arm64": {
+      "#import": [
+        "maccatalyst.14",
+        "maccatalyst.13-arm64"
+      ]
+    },
+    "maccatalyst.14-x64": {
+      "#import": [
+        "maccatalyst.14",
+        "maccatalyst.13-x64"
+      ]
+    },
     "ol": {
       "#import": [
         "rhel"
diff --git a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtimeGroups.props b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtimeGroups.props
index 3ad08c83ce89c9..8bef4cfcd888ba 100644
--- a/src/libraries/Microsoft.NETCore.Platforms/pkg/runtimeGroups.props
+++ b/src/libraries/Microsoft.NETCore.Platforms/pkg/runtimeGroups.props
@@ -35,6 +35,12 @@
       <Architectures>wasm</Architectures>
     </RuntimeGroup>
 
+    <RuntimeGroup Include="maccatalyst">
+      <Parent>ios</Parent>
+      <Architectures>x64;arm64</Architectures>
+      <Versions>13;14</Versions>
+    </RuntimeGroup>
+
     <RuntimeGroup Include="centos">
       <Parent>rhel</Parent>
       <Architectures>x64</Architectures>