A list of aircraft operators that have that have suffered an accident, serious incident or hijacking. The list may also contain defunct airlines or airlines that in the meantime have changed their name or have merged.

Airlines:
Eurolot
EXIN
LOT Polskie Linie Lotnicze

Flying schools, Aeroclubs, Paraclubs:
Aeroklub Jeleniogórski
Aeroklub Polskiej Rzeczypospolitej Ludowej - APRL (became Aeroklub Polski - AP in 1989)
Aeroklub Pomorski
Aeroklub RP
Aeroklub Zaglebia Miedziowego
Aeroklub Ziemi Lubuskiej

Manufacturers:
PZL Mielec
WSK Mielec (PZL was named WSK Mielec in 1949 and PZL Mielec in 1998)
WSK Okecie
WSK Okecie/ZUA

Military:
Lotnictwo Marynarki Wojennej (Polish Navy)
Polish Air Force

Organisations (non-profit):
Polskie Towarzystwo Geofizyczne

Private:
J. Lewandowski

Special operations (survey, crop spraying etc.):
Aeropol
Zakladu Urz. Chem.
Zakladu Uslug Agrolotniczych - ZUA