John William Reid (June 14, 1821 – November 22, 1881) was a lawyer, soldier, one-time slaveholder and U.S. Representative from Missouri.

A captain in the Mexican War, Reid led a company that served in Doniphan's Regiment where he participated in the Battle of Sacramento.

[5] Reid led the pro-slavery forces that Governor (and later Union General) John W. Geary ordered to disperse from Lawrence, Kansas in September 1856.

Jackson County voters elected Reid to the Missouri House of Representatives, and he served from 1854 to 1856, as well as helped revise the state's statutes.

Pardoned after the war, Reid returned to Kansas City, and with Charles Kearney, Theodore Case and Congressman Robert Van Horn helped secure construction of the Hannibal Bridge, the first spanning the Missouri River.