KBS may stand for any of the following:
- Kalayaan Broadcasting System
- Kansas Broadcasting System (flagshipped by KWCH-TV in Wichita, Kansas)
- Kaohsiung Broadcasting Station
- Kellogg Biological Station
- Kelly Bischoff Saal (KBS Productions Inc.), composed of early 1930s motion picture producers Burt Kelly, Samuel Bischoff, and William Saal
- Kempegowda Bus Station
- Kent Business School
- Kenya Bureau of Standards
- Keystone Broadcasting System
- Kilobytes
- Knowledge-based systems
- Korean Broadcasting System
- Kursbuchstrecke, numbers given to scheduled railway routes in Germany
- Kyoto Broadcasting System, once Kinki Broadcasting System.