Subiaco may refer to:
- Subiaco, Arkansas, a town in the United States
- Subiaco Abbey (Arkansas), a Benedictine monastery
- Subiaco Academy, operated by the abbey
- Subiaco, Lazio, a town in Italy, site of St. Benedict's first monastery
- Subiaco, Western Australia, suburb of Perth
- Subiaco Oval, a sports ground and former stadium
- Subiaco Football Club
- City of Subiaco, a local government municipality in Perth, Western Australia centred on the suburb of the same name
- Subiaco Creek, a watercourse in Sydney, Australia.