OSFL

AcronymDefinition
OSFLOlive-Sided Flycatcher (bird species Contopus cooperi)
OSFLOrganización Sin Fines de Lucro (Spanish: Not-for-Profit Organization)
OSFLOrchestra of the Southern Finger Lakes (Corning, NY)
OSFLOlympian Sunday Football League (UK)
OSFLOffice Supplies for Less
OSFLOperation Sports Football League (gaming)