Users
- Argentina
- Bangladesh: Rapid Action Battalion.
- Brazil: The Brazilian Army uses a version of the M1911 developed by IMBEL chambered in 9x19mm Parabellum and designated M973.
- Bolivia
- Canada: The Canadian Army had no official sidearm during World War I, and officers were expected to buy their own sidearms; this practice that continued into the Second World War. The M1911 was a popular choice with many officers.
- People's Republic of China Norinco exports a clone of the M1911A1 for civilian purchase。The Chinese arms company also manufactured conversion kits to chamber the 7.62x25mm Tokarev round after the Korean War.
- Republic of China Use the T51K1 (second version of Taiwanese M1911) chambered in the .45 ACP round before using both Colt and the T-51 (first verson of Taiwanese M1911).
- Colombia
- Costa Rica
- Dominican Republic
- East Timor Used by Timor Leste Defence Force
- Ecuador
- Fiji
- Greece
- Guatemala
- Hong Kong Was a sidearm for Surveillance Support Unit of Hong Kong Police Force and now being replaced by SIG Sauer P250 and the Glock 17 pistols.
- Haiti
- Indonesia
- Iran
- Liberia
- Lithuania: Lithuanian Armed Forces.
- Luxembourg: In service with 1st Artillery Battalion 1963–1967.
- Malaysia: In service with 10 Paratrooper and Grup Gerak Khas special forces of the Malaysian Army and Pasukan Gerakan Khas counter-terrorism units of the Royal Malaysia Police.
- Mexico
- Nazi Germany Used captured pistols during WWII.
- Nicaragua
- Norway
- Philippines
- Spain
- South Korea: Made under license by S&T Daewoo and used by Republic of Korea Air Force as officers' sidearms.
- South Vietnam
- Soviet Union: Thousands of pistols were received as military assistance during World War II.
- Thailand: Used by the Royal Thai Police and Royal Thai Army, under the designation ปพ.86 or M1911A1.
- United Kingdom
- United States: Former standard-issue service pistol of the United States Armed forces. The pistol remains in service with various law enforcement agencies across the country, as well as some US Special Operations soldiers. A quantity of 5,000 was purchased by the FBI Hostage Rescue Team. In July 2012, the U.S. Marines placed a $22.5 million order for 12,000 M1911 pistols for MEU(SOC) forces.
- West Germany
- North Vietnam: Captured and used by North Vietnam soldiers in the First Indochina War.
- Zimbabwe
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