- Piala Asia U-23 AFC 2024
- Global System for Mobile Communications
- System of a Down
- Mazmur 23
- Federal Reserve System
- Sistem informasi geografis
- Nintendo Entertainment System
- Sistem operasi telepon genggam
- Sudaryono
- Sakti Wahyu Trenggono
- Namco System 23
- IBM System/23 Datamaster
- Star system
- University system
- Psalm 23
- Namco System 11 and System 12
- IBM Personal Computer
- ZSU-23-4 Shilka
- KS-23
- X-23
