LBS is a three-letter abbreviation which may mean:
- Common brand of German Landesbausparkassen, cf. German public banks.
- Lazy bowel syndrome, a common bowel issue.
- Lease Buyback Scheme, a monetisation option introduced by the Singapore Government
- Leeds Building Society, formerly the Leeds and Holbeck building society.
- Left Behind Spouse, used in a number of midlife crisis forms.
- Legendary Banked Slalom, snowboard race held annually at Mt. Baker Ski Area in Washington State
- Lexington Broadcast Services Company, defunct television production and syndication company
- Liberia Broadcasting System, state-owned radio broadcasting network in Liberia
- Liberty Broadcasting System, defunct radio network
- Liverpool Business School
- Lotus Business School, a B-School in India affiliated with Pune University
- Load Balancing System, distributed processing system by Cadence Design Systems
- Local bike shop, small bicycle service shop
- Location-based service, mobile feature utilizing location information, such as GPS
- London Business School, college of the University of London
- Lauder Business School, Fachhochschule in Vienna, Austria
- Hypoglycemia, medical term for low blood sugar
- Louise Brooks Society, fan club for the silent-film star