The M114 155 mm howitzer was a towed howitzer developed and used by the United States Army. It was first produced in 1942 as a medium artillery piece under the designation of 155 mm Howitzer M1. It saw service with the US Army during World War II, the Korean War, and the Vietnam War, before being replaced by the M198 howitzer.
The gun was also used by the armed forces of many nations, including Afghanistan, Argentina, Austria, Belgium, Brazil, Bosnia, Cambodia, Cameroon, Canada, Chile, Republic of China, Croatia, Denmark, Germany, Ecuador, France, Greece, Iran, Iraq, Israel, Italy, Japan, Jordan, South Vietnam, South Korea, Lebanon, Libya, Norway, Netherlands, Pakistan, the Philippines, Portugal, Saudi Arabia, Singapore, Spain, Thailand, Turkey, Venezuela, Vietnam and Yugoslavia.
In some countries, the M114 still remains in service.