English abbreviations from sqo to sqx
- SQO (Self -Questioning Opinion)
- SQ or SQL (Squelch)
- SQP (SQuare Pixel)
- SQPMM (Software Quality and Process Maturity Model)
- SQPP (Software Quality Program Plan)
- SQQ (Šiauliai International Airport)
- SQQ-32 (Variable Depth Minehunting Sonar)
- SQQ-89 (Undersea Warfare Combat System)
- SQR (Soroako Airport)
- SQR-18 (Sonar Tactical Towed Array System)
- SQS (School Quality Services)
- SQS-53 (Submarine Sonar)
- SQT (Servant Quarters)
- SQU (SQUash)
- S-Quad (Silent Sound Spread Spectrum)
- SQUID (Super-conducting QUantum Interference Device)
- SQV (Sequim Valley Airport (FAA: W28))
- SQW (Skive Airport)
- SQX (São Miguel do Oeste Airport)