Micro-Trains Line Co.
Manufacturer of small scale (N and Z) model trains.
http://www.micro-trains.com

MTH Electric Trains
Manufactures RailKing, Premier, Tinplate lines of model trains in O and standard gauges.
http://www.mth-railking.com

ACE Trains
Makers of O gauge tinplate toy and model trains.
http://www.acetrains.com

Model Power
Maker of trains in G, O, HO, N.
http://www.modelpower.com/

Lionel
Manufacturer of model trains and accessories in O and standard gauges.
http://www.lionel.com/

Fleischmann Trains
Fleischmann Modellbahnen - Die Modellbahn der Profis
http://www.fleischmann.de/

Model Rectifier Corp
Large selection of hobby products including RC planes, radio control cars, trucks, boats, helicopters, flight simulators, 1/32 slot cars, battery chargers, model engines, model trains, sound systems, train controls and plastic model kits from Model Rectifier Corporation (MRC).
http://www.modelrec.com/

Roco Models
Austrian manufacturer of HO, N and TT model trains, vehicles and accessories.
http://www.roco.com

Regal Way
Hong Kong manufacturers of die cast toys, model trains and cars.
http://www.regalway.com/

Veteran Models
Manufactures O gauge model trains of Victorian railways prototypes. Australia.
http://www.users.bigpond.com/swarm_leeder/