| Krauss |
Krauss & Co |
Müchen, Gremany |
|
| KrM |
Krauss Maffei |
München-Allach, Gremany |
|
| Krupp |
Krupp |
Essen, Gremany |
|
| Lenin |
Lenin-Werke |
Pilsen, Czechoslovakia |
|
| ELF |
Madhepura Electric Loco factory |
Madhepura, Bihar |
Alstom/Indian Railways joint venture factory to produce 800 WAG-12s over ten years |
| MW |
Manning Wardle & Company |
Boyne Engine Works, Leeds, Great Britain |
|
| Martins |
Martin & Co |
Calcutta, Bengal, India |
|
| Breuer |
Maschinen- und Armaturenfabrik, vorm. H. Breuer & Co. |
Frankfurt/Main-Höchst, Germany |
|
| MaK |
Maschinenbau Kiel GmbH |
Germany |
|
| MEP |
McEwan, Pratt & Co Ltd |
Wickford, Great Britain |
|
| Mits |
Mitsubishi Heavy Industries Ltd |
Nagasaki, Japan |
|
| Mitsubishi |
Mitsubishi Heavy Industry Ltd |
Nagasaki, Japan |
|
| MLW |
Montreal Locomotive Works |
Montreal, Canada |
|
| MSC |
Motihari Sugar Corporation Workshops |
Motihari, Uttar Pradesh, India |
|
| MR |
Motor Rail Ltd |
Simplex Works, Bedford, Great Britain |
|
| Deutz |
Motorenfabrik Deutz AG |
Germany |
|
| MH |
Muir Hill (Engineers) Ltd |
Trafford Park, Manchester, Great Britain |
|
| Nam Tu |
Nam Tu Works, Burma Mines Railway |
Burma |
|
| NW |
Nasmyth, Wilson & Company |
Patricroft, Manchester, Great Britain |
|
| N |
Neilson & Co Ltd |
Springburn Works, Glasgow, Great Britain |
|
| Niigata |
Niigata Transys Co Ltd |
Tokyo, Japan |
|
| 9E |
Nine Elms Works, LSWR |
London, Great Britain |
|
| Nippon |
Nippon |
Japan |
|
| Niteq |
Niteq Transport Handling Systems |
The Netherlands |
|
| NBL |
North British Locomotive Company |
UK |
|
| NBA |
North British Locomotive Company, Atlas Works |
Glasgow, Great Britain |
|
| NBH |
North British Locomotive Company, Hyde Park Works |
Glasgow, Great Britain |
|
| NBQ |
North British Locomotive Company, Queens Park Works |
Glasgow, Great Britain |
|
| NB |
North British Locomotive Company, Unknown Works |
Glasgow, Great Britain |
|
| O&K |
Orenstein & Koppel AG |
Berlin-Drewitz, Germany |
|
| OEPL |
Ovis Equipments Pvt Ltd |
Hyderbad, India |
|
| PSMT |
Patalia State Monorail Tramway Workshops |
Punjab, India |
|
| PLW |
Patiala Locomotive Works |
Patiala, Punjab, India |
Has been rebuilding WDM-2 locos for many years and since around the year 2000 upgrading them to WDM-3A standards. From 2012 started building WDM-3D locos when DLW ceased production |
| P |
Peckett & Sons |
Bristol, Great Britain |
|
| Pits |
Pittsburgh Locomotive & Car Works |
Pittsburgh, USA |
|
| Plym |
Plymouth Locomotive Works |
Ohio, USA |
|
| PSF |
Purtabpore Sugar Factory Workshops |
Mairwa, Uttar Pradesh, India |
|
| L |
R & A Lister Co Ltd |
Dursley, Gloucestershire, Great Britain |
|
| RWH |
R & W Hawthorn |
Newcastle-upon-Tyne, Great Britain |
|
| HL |
R & W Hawthorn, Leslie & Co |
Newcastle-upon-Tyne, Great Britain |
|
| R&R |
Ransomes & Rapiers Ltd |
Ipswich, Great Britain |
|
| Windh |
Rheiner Maschienfabrik |
Windhoff, Gremany |
|
| RS |
Robert Stephenson & Co Ltd |
Newcastle-upon-Tyne, Great Britain |
|
| RSHD |
Robert Stephenson & Hawthorn, Darlington Works |
Darlington, Great Britain |
|
| RSHN |
Robert Stephenson & Hawthorn, Newcastle Works |
Newcastle, Great Britain |
|
| RSH |
Robert Stephenson & Hawthorn, Unknown Works |
Great Britain |
|
| Ruhr |
Ruhrthaler Maschinenfabrik Schwarz & Dyckerhoff KG |
Mülheim/Ruhr, Gremany |
|
| RH |
Ruston & Hornsby Ltd |
Lincoln, Great Britain |
|
| Decau |
S A Decauville |
Corbiel, France |
|
| ST |
Saundersons Tractor Works |
Elstow Road, Bedford, Great Britain |
|
