diff --git a/src/OpenFOAM/fields/Fields/fieldTypes.C b/src/OpenFOAM/fields/Fields/fieldTypes.C
index 79ff2e60d9..c7160c859d 100644
--- a/src/OpenFOAM/fields/Fields/fieldTypes.C
+++ b/src/OpenFOAM/fields/Fields/fieldTypes.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2018-2024 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -70,4 +70,16 @@ const Foam::word Foam::fieldTypes::zeroGradientType
 );
 
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
+
+bool Foam::fieldTypes::is_basic(const word& clsName)
+{
+    return
+    (
+        clsName.ends_with("Field")
+     && fieldTypes::basic.contains(clsName)
+    );
+}
+
+
+// ************************************************************************* //
diff --git a/src/OpenFOAM/fields/Fields/fieldTypes.H b/src/OpenFOAM/fields/Fields/fieldTypes.H
index 55d8e62942..d890277926 100644
--- a/src/OpenFOAM/fields/Fields/fieldTypes.H
+++ b/src/OpenFOAM/fields/Fields/fieldTypes.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2018-2024 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -81,6 +81,9 @@ namespace fieldTypes
 //  These also correspond to cloud output fields.
 extern const wordList basic;
 
+//- Test if the class name appears to be a basic field
+bool is_basic(const word& clsName);
+
 
 // Commonly used patch field types
 
diff --git a/src/OpenFOAM/fields/Fields/primitiveFieldsFwd.H b/src/OpenFOAM/fields/Fields/primitiveFieldsFwd.H
index 1c84b8a9cb..8098f859d9 100644
--- a/src/OpenFOAM/fields/Fields/primitiveFieldsFwd.H
+++ b/src/OpenFOAM/fields/Fields/primitiveFieldsFwd.H
@@ -33,8 +33,8 @@ Description
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef primitiveFieldsFwd_H
-#define primitiveFieldsFwd_H
+#ifndef Foam_primitiveFieldsFwd_H
+#define Foam_primitiveFieldsFwd_H
 
 #include "fieldTypes.H"
 
diff --git a/src/OpenFOAM/fields/GeometricFields/pointFields/pointFields.C b/src/OpenFOAM/fields/GeometricFields/pointFields/pointFields.C
index dc017832b4..bf2e6660a8 100644
--- a/src/OpenFOAM/fields/GeometricFields/pointFields/pointFields.C
+++ b/src/OpenFOAM/fields/GeometricFields/pointFields/pointFields.C
@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
+    Copyright (C) 2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -95,4 +96,16 @@ const Foam::wordList Foam::fieldTypes::point
 });
 
 
+// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
+
+bool Foam::fieldTypes::is_point(const word& clsName)
+{
+    return
+    (
+        clsName.starts_with("point")  // && clsName.ends_with("Field")
+     && fieldTypes::point.contains(clsName)
+    );
+}
+
+
 // ************************************************************************* //
diff --git a/src/OpenFOAM/fields/GeometricFields/pointFields/pointFieldsFwd.H b/src/OpenFOAM/fields/GeometricFields/pointFields/pointFieldsFwd.H
index 5cfb851386..14f5559e30 100644
--- a/src/OpenFOAM/fields/GeometricFields/pointFields/pointFieldsFwd.H
+++ b/src/OpenFOAM/fields/GeometricFields/pointFields/pointFieldsFwd.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011 OpenFOAM Foundation
-    Copyright (C) 2018-2024 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -96,12 +96,15 @@ typedef
 
 namespace fieldTypes
 {
-    //- Standard point field types (scalar, vector, tensor, etc)
-    extern const wordList point;
+
+//- Standard point field types (scalar, vector, tensor, etc)
+extern const wordList point;
+
+//- Test if the class name appears to be a point field
+bool is_point(const word& clsName);
 
 } // End namespace fieldTypes
 
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace Foam
diff --git a/src/finiteArea/fields/areaFields/areaFields.C b/src/finiteArea/fields/areaFields/areaFields.C
index b1f4e7f853..51f28878cd 100644
--- a/src/finiteArea/fields/areaFields/areaFields.C
+++ b/src/finiteArea/fields/areaFields/areaFields.C
@@ -156,4 +156,16 @@ const Foam::wordList Foam::fieldTypes::area_internal
 });
 
 
+// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
+
+bool Foam::fieldTypes::is_area(const word& clsName)
+{
+    return
+    (
+        clsName.starts_with("area")  // && clsName.ends_with("Field")
+     && fieldTypes::area.contains(clsName)
+    );
+}
+
+
 // ************************************************************************* //
diff --git a/src/finiteArea/fields/areaFields/areaFieldsFwd.H b/src/finiteArea/fields/areaFields/areaFieldsFwd.H
index 382bb0bba9..653270daf8 100644
--- a/src/finiteArea/fields/areaFields/areaFieldsFwd.H
+++ b/src/finiteArea/fields/areaFields/areaFieldsFwd.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2016-2017 Wikki Ltd
-    Copyright (C) 2018-2024 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -92,15 +92,18 @@ typedef
 
 namespace fieldTypes
 {
-    //- Standard area field types (scalar, vector, tensor, etc)
-    extern const wordList area;
 
-    //- Standard dimensioned field types (scalar, vector, tensor, etc)
-    extern const wordList area_internal;
+//- Standard area field types (scalar, vector, tensor, etc)
+extern const wordList area;
+
+//- Standard dimensioned field types (scalar, vector, tensor, etc)
+extern const wordList area_internal;
+
+//- Test if the class name appears to be an area field
+bool is_area(const word& clsName);
 
 } // End namespace fieldTypes
 
-
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 } // End namespace Foam
diff --git a/src/finiteVolume/fields/surfaceFields/surfaceFields.C b/src/finiteVolume/fields/surfaceFields/surfaceFields.C
index a8c900d660..3ea687217c 100644
--- a/src/finiteVolume/fields/surfaceFields/surfaceFields.C
+++ b/src/finiteVolume/fields/surfaceFields/surfaceFields.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2022 OpenCFD Ltd.
+    Copyright (C) 2022-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -94,4 +94,16 @@ const Foam::wordList Foam::fieldTypes::surface
 });
 
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
+
+bool Foam::fieldTypes::is_surface(const word& clsName)
+{
+    return
+    (
+        clsName.starts_with("surface")  // && clsName.ends_with("Field")
+     && fieldTypes::surface.contains(clsName)
+    );
+}
+
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/fields/surfaceFields/surfaceFieldsFwd.H b/src/finiteVolume/fields/surfaceFields/surfaceFieldsFwd.H
index d0caef925e..49ad2a2c42 100644
--- a/src/finiteVolume/fields/surfaceFields/surfaceFieldsFwd.H
+++ b/src/finiteVolume/fields/surfaceFields/surfaceFieldsFwd.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011 OpenFOAM Foundation
-    Copyright (C) 2022 OpenCFD Ltd.
+    Copyright (C) 2022-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -86,8 +86,12 @@ typedef
 
 namespace fieldTypes
 {
-    //- Standard surface field types (scalar, vector, tensor, etc)
-    extern const wordList surface;
+
+//- Standard surface field types (scalar, vector, tensor, etc)
+extern const wordList surface;
+
+//- Test if the class name appears to be an surface field
+bool is_surface(const word& clsName);
 
 } // End namespace fieldTypes
 
diff --git a/src/finiteVolume/fields/volFields/volFields.C b/src/finiteVolume/fields/volFields/volFields.C
index 25895c46a7..3f5a337336 100644
--- a/src/finiteVolume/fields/volFields/volFields.C
+++ b/src/finiteVolume/fields/volFields/volFields.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2018,2023 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -157,4 +157,16 @@ const Foam::wordList Foam::fieldTypes::volume
 });
 
 
-// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+// * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
+
+bool Foam::fieldTypes::is_volume(const word& clsName)
+{
+    return
+    (
+        clsName.starts_with("vol")  // && clsName.ends_with("Field")
+     && fieldTypes::volume.contains(clsName)
+    );
+}
+
+
+// ************************************************************************* //
diff --git a/src/finiteVolume/fields/volFields/volFieldsFwd.H b/src/finiteVolume/fields/volFields/volFieldsFwd.H
index 32bb8d658e..8e0b91533e 100644
--- a/src/finiteVolume/fields/volFields/volFieldsFwd.H
+++ b/src/finiteVolume/fields/volFields/volFieldsFwd.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011 OpenFOAM Foundation
-    Copyright (C) 2018-2022 OpenCFD Ltd.
+    Copyright (C) 2018-2025 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -92,11 +92,15 @@ typedef
 
 namespace fieldTypes
 {
-    //- Standard dimensioned field types (scalar, vector, tensor, etc)
-    extern const wordList internal;
 
-    //- Standard volume field types (scalar, vector, tensor, etc)
-    extern const wordList volume;
+//- Standard dimensioned field types (scalar, vector, tensor, etc)
+extern const wordList internal;
+
+//- Standard volume field types (scalar, vector, tensor, etc)
+extern const wordList volume;
+
+//- Test if the class name appears to be a volume field
+bool is_volume(const word& clsName);
 
 } // End namespace fieldTypes