SSSO

AcronymDefinition
SSSOSpecialized Satellite Services Operator
SSSOSecure Single Sign on
SSSOSingle Switched Socket Outlet (electricity)
SSSOSecure Single Sign-On
SSSOStay Strong, Starve On
SSSOSt Saviours and St Olaves (UK school/church)
SSSOStandard Systems Support Office
SSSOSherborne Schools' Symphony Orchestra (UK)
SSSOSpecialized Surplus Sales Office
SSSOSame Source, Same Output
SSSOsame-sex sexual orientation