The Farman 12We was a French 12-cylinder broad arrow configuration aircraft engine that was designed and built by Farman in the early 1920s.

The Farman company developed and produced aero engines from 1915; the 12We was the company's most produced engine.

Following the cylinder layout of the Napier Lion this engine featured three banks of four cylinders and employed water cooling.

[1] The 12We was first flown in a Farman F.60 Goliath in October 1922 and later set a distance record powering a Farman F.62 in 1924, the engine ran continuously for 38 hours.

[2] Preserved Farman 12We engines are on static display at the following museums: Data from Gunston.