Operators
- Hungary
- Hungarian Air Force operated one ex-Polish Air Force PZL P.11a evacuated on 23 September 1939.
- Bulgaria
- Bulgarian Air Force operated a few in World War II
- Latvia
- Latvian Air Force operated one ex-Polish Air Force PZL P.11a evacuated on 17 September 1939.
- Poland
- Polish Air Force
- Romania
- Royal Romanian Air Force
- Soviet Union
- Soviet Air Force took over the Latvian machine when they invaded Latvia 17 June 1940, and two more (see above) as war prizes.
Read more about this topic: PZL P.11