Joshua James Guppey (August 27, 1820 – December 8, 1893) was an American lawyer, politician, and Wisconsin pioneer.

He served as a Union Army officer in the American Civil War, and received an honorary brevet to the rank of brigadier general.

[2] Guppey died of influenza[1] and pneumonia[4] in Portage on December 8, 1893, and is interred at Pine Hill Cemetery (Dover, New Hampshire).

His second-in-command during the Battle of Champion Hill was future U.S. Postmaster General and Secretary of Interior William Freeman Vilas.

Guppey later contracted malaria and was shot below his left knee in 1863 in the Battle of Bayou Bourbeux,[1] which incapacitated him for a time.