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:
ADC Airlines
Aerocontractors Company of Nigeria
Aeronautical Ind. Engineering and Project Mgt. Co. (AIEP - Aeronautical Industrial Engineering and Project Management Company Ltd (Nigeria))
Afrimex
Air Atlantic Cargo
Albarka Air
Allied Air
Arax Airlines
Bellview Airlines
Bristow Helicopters
Chanchangi Airlines
Chrome Air
Concord Airlines
Dana Air
Eagle Aviation ?
EAS Airlines (Merged with Fleet Air Nigeria to form Nicon Airways)
GAS Air Nigeria
Harka Air Services
Hold Trade Air
IAT Cargo
Intercontinental Airlines
International Air Tours Ltd.
IRS Airlines
Kabo Air
Koda Air
Millenium Air
Nigeria Airways
Okada Air
Oriental Airlines
Pan African Airlines
Premium Air Shuttle
RN Cargo
Savanah Airlines
Sky Executive Airlines
Skyline
Skypower Express Airways
Sosoliso Airlines
Trans-Air Service
West African Airways Corp
Wings Aviation

Corporations:
Ashaka Cement Comp.
Imani & Sons
Motor Parts Manuf.
Oriental Energy Resources
Radio Communications Corp
Segas International Ltd

Government:
Nigerian Government
Taraba State Government

Military:
Biafran Air Force (Biafra was a secessionist state in south-eastern Nigeria that existed from 30 May 1967 to 15 January 1970)
Federal Nigerian Air Force
Nigerian Air Force - NAF