YSO


AcronymDefinition
YSOYellow Springs, Ohio
YSOYoung Stellar Object
YSOYale Symphony Orchestra
YSOYamagata Symphony Orchestra (Japan)
YSOYouth Service Officer
YSOYouth Soccer Organization (various organizations)
YSOYttrium Oxyorthosilicate
YSOYoungstown Symphony Orchestra (Youngstown, OH)
YSOYork Symphony Pops Orchestra
YSOYlivieskan Sosiaalialan Oppilaitos (Finnish: Ylivieska Social Institution; Ylivieska, Finland)
YSOYouth Sector Organisation (Singapore)