Oscars 2026: Jessie Buckley wins Best Actress Jessie Buckley won the Best Actress Oscar for Hamnet. 16 March 2026 Jessie Buckley hailed her Best Actress Oscar win as the "greatest honour". Jessie Buckley won Best Actress The 36-year-old actress became the first Irish woman to win the accolade on Sunday (15.03.26) for her performance in Chloe Zhao's Hamnet, and she dedicated the prize to "the beautiful chaos of a mother's heart".