An Irish Goodbye, a film from Northern Ireland, won Best British Short at the Baftas in London.
It triumphed at the ceremony at the Southbank Centre by defeating The Ballad of Olive Morris and A Drifting Up.
The Banshees of Inisherin, which received ten nominations, won best British film, best original screenplay, best supporting actor, and best supporting actress.
Early winners included Kerry Condon and Barry Keoghan.
Keoghan, who was born in Dublin, triumphed over Brendan Gleeson, his co-star.
He gave "the kids from the area that I came from who are dreaming to be something" his award, which he dedicated to them.
Two estranged brothers reconcile after their mother dies in the film An Irish Goodbye, which Ross White and Tom Berkeley both directed and wrote.
A dark comedy that takes place on a farm in Northern Ireland's countryside, it was filmed in Londonderry, Templepatrick, and Saintfield.
It's been a remarkable year for Irish film, and the talent has been on display at all the awards shows, according to Ross White, who was speaking in the Bafta winners' room.
We are only a tiny portion of that, but we feel incredibly honored to be.
"We are also representing Northern Ireland; it is very important to us.
"To see this Irish talent being recognized in this way is such an honor and makes us feel proud. Colm Bairéad for The Quiet Girl, a stunning movie, and the Banshees team are our fellow nominees. " .
James Martin, who plays Lorcan in the movie, and his co-star Seamus O'Hara were both present at the ceremony.
After Berkeley and White won, James' mother Suzanne Martin expressed her "delight" for them.
As a mother, she said, "They created something very special on screen - something that moved me.".
An Cailin Ciin (The Quiet Girl) came in second to All Quiet on the Western Front in the categories for screenplay adaptation and not in English.
Paul Mescal, Colin Farrell, and Daryl McCormack were other Irish actors with leading roles who were of interest. Austin Bulter for Elvis received that honor.
In the weeks leading up to the Oscars on March 12, the Baftas are among the most prestigious events.
Paul Mescal, The Banshees of Inisherin, An Irish Goodbye, and Cailn Ciin are also up for Oscars.
An Cailn Ciin is set in 1981 and follows nine-year-old Cáit as she is sent to live with her distant relatives in County Waterford and finally finds herself in a loving home for the first time. Cáit is withdrawn and neglected and the story follows her as she finally finds herself in a loving home.
It broke Irish-language film box office records in the UK and Ireland.