Look up GMO in Wiktionary, the free dictionary.
A GMO is a genetically modified organism.
GMO may also refer to:
- Genetically modified food
- Gell-Mann–Okubo mass formula in particle physics
- Generalised molecular orbital theory, in chemistry
- Gulf, Mobile and Ohio Railroad, a U.S. railroad carrier corporation
- GMO LLC, a Boston-based asset management firm led by Jeremy Grantham
- GMO Internet, Inc, a Japanese internet services company, and parent of web security company GlobalSign