Alos may refer to:
- Alos, Greece, an ancient city in Greece
- Alos, Ariège, a commune of France
- Alos, Tarn, a commune of France
- ALOS (health care), an initialism used in managed health care, meaning "average length of stay"
- Advanced Land Observation Satellite, a Japanese satellite
- Aloş, a Turkish sculptor
- Carlos Alós (born 1975), a Spanish professional football manager and former player
- Concha Alós (1926 – 2011), Spanish writer
- Maria Alos (1973–2011), interdisciplinary artist
- Ricardo Alós (1931 – 2024), Spanish professional footballer
- Carlos Alós-Ferrer (born 1970), Spanish neuroeconomist, decision theorist, and game theorist