The Pacific Aviation Safety Office (PASO) is a regional international organisation overseeing Safety Oversight in the Pacific Islands using guidelines provided by the International Civil Aviation Organization (ICAO). PASO was created on 11 June 2005, as a result of the Pacific Islands Civil Aviation Safety and Security Treaty (PICASST) and is managed by a permanent staff based in Port Vila, Vanuatu.

States which are currently Parties to the PICASST are: The Cook Islands, Kiribati, Niue, Nauru, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu, and Vanuatu. Countries which are also members of PASO, but not Parties to the PICASST are: Australia, Fiji, and New Zealand.

Associate member organisatiations of PASO are: The Asian Development Bank, Association of South Pacific Airlines,  USA Federal Aviation Agency, and the Pacific Islands Forum Secretariat.