| Acronym | Definition |
|---|
| TSY➣The Selvedge Yard (pop culture website) |
| TSY➣Tusayan (Amtrak station code; Tusayan, AZ) |
| TSY➣The Sophomore Year (band) |
| TSY➣Technology Systems (Bellcore) |
| TSY➣The Satellite Year (band) |
| TSY➣Telephony Subsystem |
| TSY➣Tryptone Soya Yeast Extract (food microbiology) |