Colas may refer to:
- People
- Claudius Colas (1884–1914), French Esperantist
- Emily Colas, American author
- Fabrice Colas (born 1964), French track cyclist
- Henry Colas (disambiguation), name of multiple people
- Oscar Colas, Cuban baseball player
- Paul Colas (1880–1972), French sports shooter
- Business and organisations
- Colas Group, a multi-national civil engineering company based in France
- Colas Rail, its rail freight subsidiary