The annoucement was made by London Mayor Sadiq Khan on behalf of Asghar Fahadi’s The Salesman.
The film is nominated for Best Foreign Language Film at this year’s Academy Awards in Los Angeles – which the director refuses to attend because of President Trump’s executive order.
The Iranian film will be screened for free in Trafalgar Square on Sunday February 26, the night of the Oscars, from 3-7pm.
Alongside his trademark hashtag #LondonisOpen, the London Mayor expressed his excitement in a new Twitter video.
He said: “We’re transforming Trafalgar Square into London’s biggest cinema, for a very special event.
“I want to welcome people from across the capital and beyond to share in the celebration of London as an international hub of creativity and as a global beacon of openness and diversity.
“Londoners have always prided ourselves on our openness to the world and what better way to do that than to come together to watch this Oscar-nominated film in one of the world’s most famous public spaces.”
The film’s official synopsis reads: “The Salesman tells the story of a young couple Emad and Rana who play the lead roles in a local rendition of Arthur Miller’s Death of a Salesman.
“Meanwhile, their personal relationship takes a hit after moving into a house that was previously inhabited by a woman who allegedly pursued a career in prostitution.”
The Salesman will be released in UK cinemas on March 17, 2017.