In May 2025, after a national casting search involving over 30,000 children, he was selected to play Harry Potter in HBO’s upcoming series.
After Dominic was selected for Harry’s role, showrunner Francesca Gardiner and director/executive producer Mark Mylod confirmed the casting in a statement, saying, “After an extraordinary search led by casting directors Lucy Bevan and Emily Brockmann, we are delighted to announce we have found our Harry, Hermione, and Ron.” They also revealed that “tens of thousands of children” auditioned for the roles.