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
EuroAtlantic Airways
Heliservicio
Hi Fly
Luzair
OMNI - Aviação e Tecnologia
Portugália
SATA Air Açores
SATA Internacional (subsidiary of SATA Air Açores; formerly Oceanair)
TAP Air Portugal
TAP Express
TAP Regional
Transportes Aéreos da India Portuguesa - TAIP
White Airways

Corporations:
Penina

Flying schools, Aeroclubs, Paraclubs:
Skydive Portugal

Government:
Autoridade Nacional de Emergência e Proteção Civil
Serviço Nacional de Bombeiros

Military:
Aeronáutica Militar (transformed in Força Aérea Portuguesa)
Força Aérea Portuguesa