The Adelaide Film Festival is a biennial and non-competitive film festival held (on alternating years to the Adelaide Festival of Arts) over two weeks in late February, in Adelaide, South Australia.

First established in May 2002, by South Australian Premier Hon. Mike Rann to stimulate the local film industry and celebrate the 30th anniversary of the South Australian Film Corporation, the festival showcases and explores contemporary screen culture with a program of screenings, special events and forum sessions.

In 2005, the festival was held in collaboration with both the Australian International Documentary Conference and WOMADelaide.

The AFF has a strong focus on local South Australian and Australian produced content, with the Adelaide Film Festival Investment Fund (AFFIF) introduced after the 2003 festival to establish a fund for equity investment in Australian films, of $500,000 per year for two years.

The AAF is featured in Variety Magazine's Top 50 unmissable film festivals around the world.