The Owens Award, named after the local cultural benefactor and longtime San Francisco Film Society (SFFS) board member, honours an actor whose work exemplifies brilliance, independence and integrity.
Williams will also appear at a public presentation at the Castro Theatre on May 4 for a career retrospective, onstage interview, and a screening of Terry Gilliam's The Fisher King.
'A perennial top-finisher, with Albert Einstein, in the best-loved genius stakes, Robin Williams is a superb actor with many wonderful roles under his belt, but his greatest performances, the ones for which he is adored and admired the world over, are when he is being his brilliant prismatic self,' SFFS executive director Graham Leggat said.
'We are very excited and happy that Robin is accepting our Owens Award at the 50th International Film Festival.'
Williams won the best supporting actor Oscar in 1998 for Good Will Hunting, and earned nominations for The Fisher King, Dead Poets Society and Good Morning Vietnam.
His credits include Mrs Doubtfire, The Birdcage, Jumanji, Hook, Patch Adams, Insomnia, One Hour Photo, Night At The Museum, Happy Feet, and the upcoming August Rush and License To Wed.
The 50th San Francisco International Film Festival is scheduled to run from Apr 26-May 10. For more details visit the official website at www.sffs.org.