Tommy O'Brien is a professional rugby player from Ireland, known for his skills as a versatile back. He has played for Leinster Rugby, one of the top teams in the United Rugby Championship, showcasing his talent in both the wing and fullback positions. O'Brien has also represented Ireland at various youth levels, contributing to his reputation as a promising athlete. O'Brien began his rugby career in youth clubs before joining the Leinster Academy. His dedication and performance on the field have earned him recognition, and he continues to develop as a player in the competitive landscape of European rugby.