OES may refer to: Organizations Bureau of Oceans and International Environmental and Scientific Affairs, the science bureau within the U.S. Department of State Ordo Equitum Solis, a French/Italian alternative music band Oregon Episcopal School, a school in Portland, Oregon, US Office of Emergency Services, a US governmental agency Order of the Eastern Star, a fraternal organisation On Every Street, an album by British rock band Dire Straits Other uses Old East Slavic, a language Old English Sheepdog, a breed of herding dog often kept as a pet Open Enterprise Server, an amalgam of NetWare and Linux Occupational Employment Statistics, a US survey Optical Emissions Spectrometer, an instrument for testing chemical composition of metals Oes, the plural for the name of the letter "O" Oes, a type of sequin Original Equipment & Service Operators of Essential Service, critical infrastructure definition in the NIS Directive See also oe (disambiguation)