An Irish Goodbye from Northern Ireland took home the award for best British short at the Baftas in London.
A Drifting Up and The Ballad of Olive Morris were defeated by it, and it ultimately won the ceremony at the Southbank Centre.
The Banshees of Inisherin, which received ten nominations, took home awards for best British film, best original screenplay, best supporting actor/actress, and outstanding British film.
Among the early winners were Kerry Condon and Barry Keoghan.
To win the coveted award, Dublin-born Keoghan defeated co-star Brendan Gleeson.
"The kids from the area that I came from who are dreaming to be something," he said in his dedication of his award.
An Irish Goodbye, a film directed and written by Ross White and Tom Berkeley, tells the tale of two estranged brothers who reconcile after the passing of their mother.
This black comedy was filmed on location in Londonderry, Templepatrick, and Saintfield and is set on a small farm in Northern Ireland.
"It's a remarkable year for Irish film and the talent on display across all the awards," Ross White said in the Bafta winners' room.
We are only a very small portion of that, but we feel so honored nonetheless.
"We are also representing Northern Ireland, and that means a lot to us.
"To see this Irish talent being recognized in this way, including Colm Bairéad for The Quiet Girl, a stunning movie, and the Banshees team, is such an honor and makes us feel proud. " .
Along with co-star Seamus O'Hara, James Martin, who plays Lorcan in the movie, attended the ceremony.
Following the victory, James' mother Suzanne Martin expressed her "delight" for Berkeley and White.
She told BBC News NI, "They created something very special on screen — something that moved me as a mother.".
An Cailin Ciin (The Quiet Girl) came in second to All Quiet on the Western Front in both the not in English category and the adapted screenplay category.
In the category of leading actors, other Irish interests included Paul Mescal, Colin Farrell, and Daryl McCormack. Austin Bulter received it for his work on Elvis.
One of the most prestigious events leading up to the Oscars on March 12 is the Bafta Awards.
Additionally nominated for Oscars are An Irish Goodbye, An Cailn Ciin, The Banshees of Inisherin, and Paul Mescal.
An Cailn Ciin is a 1981 novel that follows nine-year-old Cáit as she is sent to live with her distant relatives in County Waterford and, for the first time, finds herself in a loving home. Cáit is withdrawn and neglected and the story follows her as she finally finds a loving home.
For an Irish-language movie, it broke box office records in the UK and Ireland.
