As of my knowledge cutoff in September 2021, Paul Mescal, an Irish actor, has not been nominated for an Oscar. He gained critical acclaim and recognition for his role as Connell Waldron in the television series "Normal People," but he has not received an Oscar nomination or appeared in a film that earned him one. It's worth noting that the information might have changed after my knowledge cutoff, so I recommend verifying with up-to-date sources for the most accurate and recent information.