Operators
- China
- Chinese Nationalist Air Force
- Finland
- Finnish Air Force (captured)
- Nazi Germany
- Luftwaffe (captured)
- Mongolia
- Mongolian People's Army Air Force- received more than 40 aircraft in July 1939-1942
- Soviet Union
- Soviet Air Force
- Soviet Naval Aviation
- Spanish Republic
- Spanish Republican Air Force
- Spain
- Spanish Air Force - Post civil war.
Read more about this topic: Polikarpov I-15