Steam locomotive 18 may refer to:
- Arcade and Attica 18, a 2-8-0 built in 1920, currently undergoing an overhaul at the Arcade and Attica Railroad in Attica, New York.
- Lake Superior and Ishpeming 18, a 2-8-0 built in 1910, currently undergoing an overhaul at the Colebrookdale Railroad in Pottstown, Pennsylvania.
- McCloud Railway 18, a 2-8-2 built in 1914, currently operational at the Virginia and Truckee Railroad in Virginia City, Nevada.
- Southern Pacific 18, a narrow gauge 4-6-0 built in 1911, currently operational at the Eastern California Museum in Independence, California.
This disambiguation page lists articles associated with the title Steam locomotive 18.If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: