STRI - syst
- SUP
- sup
- SUPANX
- SUPCEN
- SUPCO
- SUPCOM
- SUPDEP
- super high intensity vulnerability assessor
- super intercontinental ballistic missile
- super long range
- super low recoil
- super mini signal cartridge
- super transportable radar
- super-hard extremely-low frequency (link)
- super-heavy regiment, Royal Artillery
- supercaliber rocket-assisted projectile
- superimposed panoramic radar display
- superintendent
- superintendent ammunition supply officer
- superintendent of contract work
- superintendent of documents classification
- superintendent of transportation
- superintendent [supervisor] of range operations
- Superintending Cartographer
- superintending sea transport officer
- Superintending Veterinary Officer
- superquick
- superquick point detonating (fuze)
- superquick sensor
- superrapid blooming offboard chaff (system)
- supersilenced sniper rifle
- supersonic aircraft engine
- supersonic cruise aircraft modification program
- supersonic cruise airplane research engine
- supersonic cruise attack fighter
- supersonic cruise intermediate range missile
- supersonic cruise research (program)
- supersonic cruise vehicle
- supersonic cruising aircraft
- supersonic expendable turbine engine
