S
- S-100
- S-AIT
- S/A
- SAA
- SaaS
- sabbatical
- saccade
- SADT
- SAE
- safe distance
- safe format
- safe mode
- safeguard
- safety
- safety engineering
- safety logic circuit
- safety mechanism
- safety-critical
- safety-critical system
- sag
- salami shaving
- SALT
- SAM
- SAMPA
- sample
- sample estimation
- sample point
- sample run
- sample size
- sample software
- sampling
- sampling rate
- sampling risk
- sanction
- sandbox
- sandwich course
- sans serif
- SAR
- SAS
- SASE
- SASS
- SATAN
- satellite
- satellite communications
- satellite constellation
- satellite mega-constellation
- satellite modem
- satellite phone
- satlet
- satoshi