diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a301787..ddf111c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -133,6 +133,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
     - `apply_polygon`
     - `fit_curve`
     - `predict_curve`
+    - `run_process`
 - `ard_normalized_radar_backscatter` and `sar_backscatter`: Added `options` parameter
 - `array_find`: Added parameter `reverse`. [#269](https://github.com/Open-EO/openeo-processes/issues/269)
 - `load_result`:
diff --git a/meta/subtype-schemas.json b/meta/subtype-schemas.json
index 347df234..b09528fa 100644
--- a/meta/subtype-schemas.json
+++ b/meta/subtype-schemas.json
@@ -271,6 +271,18 @@
                 }
             }
         },
+        "process-id": {
+            "type": "string",
+            "subtype": "process-id",
+            "title": "Process",
+            "description": "A process, referenced by id without namespace"
+        },
+        "process-namespace": {
+            "type": "string",
+            "subtype": "process-namespace",
+            "title": "Process namespace",
+            "description": "The namespace for the process."
+        },
         "raster-cube": {
             "type": "object",
             "subtype": "raster-cube",
diff --git a/proposals/run_process.json b/proposals/run_process.json
new file mode 100644
index 00000000..daa4a898
--- /dev/null
+++ b/proposals/run_process.json
@@ -0,0 +1,43 @@
+{
+    "id": "run_process",
+    "summary": "Run a process",
+    "description": "Executes a process. This is useful for user-defined processes which should be able to execute different processes based on the user input.",
+    "categories": [
+        "development"
+    ],
+    "experimental": true,
+    "parameters": [
+        {
+            "name": "id",
+            "description": "The identifier for the process to be executed.",
+            "schema": {
+                "type": "string",
+                "subtype": "process-id"
+            }
+        },
+        {
+            "name": "arguments",
+            "description": "The arguments passed to the process.",
+            "schema": {
+                "type": "object"
+            }
+        },
+        {
+            "name": "namespace",
+            "description": "The namespace of the process.\n\nDefaults to `null`, which checks both user-defined and predefined processes, but prefers user-defined processes if both are available.",
+            "schema": {
+                "type": "string",
+                "subtype": "process-namespace"
+            },
+            "optional": true,
+            "default": null
+        }
+    ],
+    "returns": {
+        "description": "The data that is returned by the executed process.",
+        "schema": {
+            "title": "Any",
+            "description": "Any data type."
+        }
+    }
+}
\ No newline at end of file