M. O’Mahony is a 21-year-old professional football player from IRL. He currently plays for Reading, wearing the number 20 shirt. At the international level, he represents Ireland U21. He plays primarily as a Forward. His preferred foot is Right. His current market value is estimated at 375K €.

His most recent move was a Loan from Reading to Brighton U23 on 2026-05-30.

In the English Football League One 2025-2026 season, M. O’Mahony scored 0 goals and provided 0 assists across 17 appearances, averaging 0 goals per game with 10 shots attempted and 3 on target.