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:
Abelag Aviation
Air Transport
ASL - Air Service Liege
ASL Airlines Belgium (named TNT Airways until 2016)
Belgian International Air Services
Brussels Airlines
Cargo B Airlines
Delta Air Transport - DAT
European Air Transport (merged with European Air Transport Leipzig GmbH)
Sabena (Sabena went bankrupt November 2001.)
SNETA - Syndicat National d'Etude du Transport Aérienne (merged into SABENA, 1923)
Sobelair
Thomas Cook Airlines Belgium
TNT Airways (renamed ASL Airlines Belgium, 2016)
Travair
TUI fly Belgium (operated as Jetairfly until 2016)

Flying schools, Aeroclubs, Skydiving:
Paracentrum Vlaanderen
Paraclub Moorsele

Military:
Belgische Luchtmacht (renamed "Luchtcomponent" in 2009)

Organisations (non-profit):
Aviation Sans Frontières Belgique
Belgische-Nederlandse Zuidpool Expeditie

Special operations (survey, crop spraying etc.):
Eurosense