Green star
Green star may refer to:
- Green star (astronomy), a white or blue star that appears to be green due to an optical illusion.
- One of the Esperanto symbols, the green star, or verda stelo
- Green Star (Australia), an environmental rating system for buildings in Australia
- Sto-Oa, a fictional star that lies at the center of the DC Comics universe
- Greenstar, an Irish waste management company
- Green Star Series, a set of five science fiction novels written by Lin Carter