S4


AcronymDefinition
S4Secondary 4 (various locations)
S4Supply Officer (Army)
S4Sleep Mode 4 (hibernation computer sleep mode)
S4Stainless Sanitary Space System
S4Logistics/Embark Office (USMC)
S4Supersonicsoundscapes (event promotions/record store)
S4NATO SG/2 Shareable (Fire Control) Software Suite