Irineu may refer to the following people:
- Irineu Calixto Couto
- Irineu Evangelista de Sousa
- Victor Irineu de Souza
- Sociedade Esportiva Irineu, Brazilian football club
Bishop Irineu Duvlea (born April 19, 1962, Alba Iulia, Romania) is bishop of the Orthodox Church of America, the Auxiliary Bishop of Dearborn Heights, vicar of the Romanian Orthodox Episcopate of America. He was consecrated on November 2, 2002.