CTSO
| Acronym | Definition |
|---|---|
| CTSO | Career and Technical Student Organizations |
| CTSO | Certified Thermal Spray Operator |
| CTSO | Chief Technology and Services Officer |
| CTSO | Cellular Telephone Switching Office |
| CTSO | Cut That Stuff Out (polite form) |
| CTSO | Chief Trading Standards Officer (UK) |
| CTSO | Cryptologic Training Support Office (CNSG) |