The 157th Field Artillery Regiment (First Colorado) is a United States Army Regimental System field artillery parent regiment of the United States Army National Guard, represented in the Colorado Army National Guard by the 3rd Battalion, 157th Field Artillery Regiment, part of the 169th Field Artillery Brigade at Colorado Springs. The regiment was first constituted in 1917 during World War I from the 1st Colorado Infantry Regiment. The regiment was an infantry regiment as part of the 40th Infantry Division.