The World Meteorological Organization is a specialized agency of the United Nations.
WMO may also refer to:
Waste Management Organization/Organisation — see short descriptions of Nuclear Waste Management Organization (Canada) and ONDRAF Waste Motor Oil, used engine oil Wayanad Muslim Orphanage, Kerala, India Weak memory order — see memory ordering West Mountain Observatory Wheatland Music Organization Wireless Monitoring Organisation, India Wonderful Music of, a music label — see Wonderful Music of Donovan and The Singing Detective World Mahjong Organization World Memon Organization World Migration Organization World Mime Organisation World Muay Thai Organization / World Muaythai Organization — see WMO 2015, or Social Support Act 2015, a Dutch law
Widgiemoolthalite's IMA symbol (Wmo) White Mountain Airport's IATA code and FAA LID Wom language (Papua New Guinea)'s ISO 639-3 code Wangmo County (), Guizhou province, China 's division code (also 522326) — see list of administrative divisions of Guizhou Windows Mobile — see Template:VgPlatforms