Trevi is the name of at least four places in Italy:
- Trevi, Lazio, one of the official rioni or districts of the modern city of Rome
- Trevi, Umbria, a comune in Perugia province
- Trevi di Terni, a frazione of Terni, in Perugia province
- Trevi nel Lazio, a comune in Frosinone province
Trevi may also refer to:
- TREVI, an internal security group formed by the European Council
- Trevi Fountain, a famous fountain in Rome
- Lancia Trevi, an automobile
- Gloria Trevi, born Gloria de los Ángeles Treviño Ruiz, February 15, 1968 in Monterrey, Nuevo León, a Mexican singer and songwriter