TWS may stand for:
- Tsunami warning system
- Twinkie wiener sandwich
- Texas Watershed Steward - a water resource education program in Texas.
- Thermal Weapon Sight
- The Winnipeg Sandbox (Canada)
- The Wilderness Society (United States)
- The Wilderness Society (Australia)
- True Wind Speed (in meteorology)
- IBM Tivoli Workload Scheduler
- Toad the Wet Sprocket
- Track while scan - radar mode
- The White Stripes - an American rock band
- The White Stripes, their 1999 debut
- Three Word Sentence - a rock/grunge band in Canada
- TransWorld Skateboarding - a very popular skateboarding magazine
- Texas World Speedway - a road-racing track in College Station, Texas.