| Acronym | Definition |
|---|
| PTSP | Proceed to Select Protocol |
| PTSP | Partial Tree Sharing Protocol |
| PTSP | Pnni Topology State Packet |
| PTSP | Payment Terminal Service Provider |
| PTSP | Physical Travelling Salesman Problem (computational intelligence) |
| PTSP | PNNI Topology State Packet (Sprint-ATM) |
| PTSP | Perishables and Temperature Sensitive Products |
| PTSP | Public Transportation Subsidy Program |
| PTSP | Probability Theory and Stochastic Process (various locations) |
| PTSP | Potential Trouble Source Person (Scientology) |
| PTSP | Payment Terminal Security Program (MasterCard) |
| PTSP | Proceed-To-Select Protocol (ITU-T) |
| PTSP | Post to See Post (forums) |
| PTSP | Public Telecommunications Service Provider (Ireland) |
| PTSP | Packet-Triggered Subscribers and Policy Control (Juniper Networks, Inc.) |