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:
Dorado Wings (renamed Crown Air)
Four Star Air Cargo
Isla Nena Air Services
Línea Aérea Puertorriqueña - LAP
Million Air San Juan
Prinair (founded as Ponce Air)
Puerto Rico Air Transport
San Juan Air
Tol Air Services ( purchased by Four Star Air Cargo, 2006)
Vieques Air Link

Corporations:
Execumed Corp.
Padosa Productions