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:
Aeroflot / Ukraine (assets taken over by Air Ukraine)
Aeromist Kharkiv
AeroSvit Airlines
Air Ukraine
Air Urga
Albatross Avia
ATI Aircompany
Atlant
Avialinii AAR
Aviatrans-K Airlines
Azov-Avia Airlines
Bosfor
Dart
Dniproavia
Hoseba
Khors Air
Lvovskie avialinii (aka Lviv Airlines Ukraine West)
Motor Sich
Mykolayiv-Aero
Poltava-Aero
Proskurov Avia
South Airlines
Ukrainian Cargo Airways (named "Ukraine Cargo Airways" in EU list but dba Ukrainian Cargo Airways)
Ukrainian-Mediterranean Airlines (also known as UM Airlines)
Unikom-Avia
Volare Aviation Enterprise

Corporations:
Mariupol'sky Metallurgical Combine
United Energy Systems of Ukraine

Flying schools, Aeroclubs, Paraclubs:
Aeroflot, Kirovograd Flight School of Civil Aviation (went up in Kirovograd Higher Civil Aviation Flying School 1986)
Odesski oask
Ukraine Flight State Academy
Ukrainska Shkola Pilotov

Manufacturers:
Antonov Design Bureau
Kalinin Design Bureau
MAP Kiev MSZ (Production Factory (MSZ) of the Soviet Ministry of Aviation Industry (MAP))

Private:
Olympia - Frank