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 GMO (Multiópticas Internacional), a retail banner operating in Chile, Colombia, Ecuador and Peru owned by Italian eyewear corporation Luxottica. NSCB Gomoh Junction railway station (station code: GMO), Jharkhand, India Music The Glenn Miller Orchestra, a U.S. jazz group Green Mountain Orchestra, a band from Hong Kong "G.M.O. (Got My Own)", 2018 song by Mýa