diff --git a/ApplicationLibCode/Commands/PolygonCommands/CMakeLists_files.cmake b/ApplicationLibCode/Commands/PolygonCommands/CMakeLists_files.cmake
index d6cdc20066..f4bbb446ac 100644
--- a/ApplicationLibCode/Commands/PolygonCommands/CMakeLists_files.cmake
+++ b/ApplicationLibCode/Commands/PolygonCommands/CMakeLists_files.cmake
@@ -7,6 +7,7 @@ set(SOURCE_GROUP_HEADER_FILES
     ${CMAKE_CURRENT_LIST_DIR}/RicExportPolygonPolFeature.h
     ${CMAKE_CURRENT_LIST_DIR}/RicSimplifyPolygonFeature.h
     ${CMAKE_CURRENT_LIST_DIR}/RicBasicPolygonFeature.h
+    ${CMAKE_CURRENT_LIST_DIR}/RicDeleteAllPolygonsFeature.h
 )
 
 set(SOURCE_GROUP_SOURCE_FILES
@@ -18,6 +19,7 @@ set(SOURCE_GROUP_SOURCE_FILES
     ${CMAKE_CURRENT_LIST_DIR}/RicExportPolygonPolFeature.cpp
     ${CMAKE_CURRENT_LIST_DIR}/RicSimplifyPolygonFeature.cpp
     ${CMAKE_CURRENT_LIST_DIR}/RicBasicPolygonFeature.cpp
+    ${CMAKE_CURRENT_LIST_DIR}/RicDeleteAllPolygonsFeature.cpp
 )
 
 list(APPEND COMMAND_CODE_HEADER_FILES ${SOURCE_GROUP_HEADER_FILES})
diff --git a/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.cpp b/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.cpp
new file mode 100644
index 0000000000..4353aeb84f
--- /dev/null
+++ b/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.cpp
@@ -0,0 +1,48 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2025     Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#include "RicDeleteAllPolygonsFeature.h"
+
+#include "Polygons/RimPolygonCollection.h"
+#include "RimOilField.h"
+#include "RimProject.h"
+
+#include <QAction>
+
+CAF_CMD_SOURCE_INIT( RicDeleteAllPolygonsFeature, "RicDeleteAllPolygonsFeature" );
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RicDeleteAllPolygonsFeature::onActionTriggered( bool isChecked )
+{
+    auto proj              = RimProject::current();
+    auto polygonCollection = proj->activeOilField()->polygonCollection();
+
+    polygonCollection->deleteAllPolygons();
+    polygonCollection->updateConnectedEditors();
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RicDeleteAllPolygonsFeature::setupActionLook( QAction* actionToSetup )
+{
+    actionToSetup->setText( "Delete All Polygons" );
+    actionToSetup->setIcon( QIcon( ":/Erase.png" ) );
+}
diff --git a/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.h b/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.h
new file mode 100644
index 0000000000..855cad4a9d
--- /dev/null
+++ b/ApplicationLibCode/Commands/PolygonCommands/RicDeleteAllPolygonsFeature.h
@@ -0,0 +1,33 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2025     Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "cafCmdFeature.h"
+
+//==================================================================================================
+///
+//==================================================================================================
+class RicDeleteAllPolygonsFeature : public caf::CmdFeature
+{
+    CAF_CMD_HEADER_INIT;
+
+protected:
+    void onActionTriggered( bool isChecked ) override;
+    void setupActionLook( QAction* actionToSetup ) override;
+};
diff --git a/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.cpp b/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.cpp
index d61a608734..36eb785bdc 100644
--- a/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.cpp
+++ b/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.cpp
@@ -100,6 +100,18 @@ void RimPolygonCollection::deleteUserDefinedPolygons()
     scheduleRedrawViews();
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RimPolygonCollection::deleteAllPolygons()
+{
+    m_polygons().deleteChildren();
+    m_polygonFiles().deleteChildren();
+
+    updateViewTreeItems();
+    scheduleRedrawViews();
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
@@ -184,6 +196,8 @@ void RimPolygonCollection::childFieldChangedByUi( const caf::PdmFieldHandle* cha
 void RimPolygonCollection::appendMenuItems( caf::CmdFeatureMenuBuilder& menuBuilder ) const
 {
     RimPolygonCollection::appendPolygonMenuItems( menuBuilder );
+    menuBuilder.addSeparator();
+    menuBuilder << "RicDeleteAllPolygonsFeature";
 }
 
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.h b/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.h
index 3c0b163582..126bf80480 100644
--- a/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.h
+++ b/ApplicationLibCode/ProjectDataModel/Polygons/RimPolygonCollection.h
@@ -40,6 +40,7 @@ public:
     RimPolygon* appendUserDefinedPolygon();
     void        addUserDefinedPolygon( RimPolygon* polygon );
     void        deleteUserDefinedPolygons();
+    void        deleteAllPolygons();
 
     void addPolygonFile( RimPolygonFile* polygonFile );