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:
Aerocondor Transportes Aéreos - ATA
Air Luxor
ARTOP - Aero-Topográfica (company still exists; no longer operates aircraft)
Avioarte Serviços Aéreos
Heliservicio
Luzair
OMNI - Aviação e Tecnologia
SATA Air Açores
TAP Air Portugal
Transportes Aéreos Continentais (subsidiary of TAP for the air taxi service)
Transportes Aéreos da India Portuguesa - TAIP

Corporations:
Penina

Flying schools, Aeroclubs, Paraclubs:
Skydive Portugal

Military:
Força Aérea Portuguesa