Operators
- Australia
- Belgium
- Brazil - 104 M3A3/A5
- Canada
- Chile
- Republic of China
- Colombia
- Cuba
- Dominican Republic
- Ecuador
- El Salvador
- France
- Greece
- Haiti – eight M3A1 and five M5A1
- Hungary - Captured At least 3 from the Soviets
- India
- Indonesia
- Italy
- Mexico
- Netherlands
- New Zealand
- Nicaragua – four M3A1 still in service with the National Guard (Nicaragua) in 1979
- Paraguay – 12 still in service 5 is operational in 2.R.C. 2010
- Philippines – Until 1959
- Poland
- Portugal – 70 vehicles in service with the Portuguese Army and other 20 with the Republican National Guard from 1956 to 1972
- Turkey
- UK
- Uruguay
- USA
- USSR
- Venezuela
- Yugoslavia
- Czechoslovakia
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