S2S
| Acronym | Definition |
|---|---|
| S2S | Server-to-Server (computer protocol) |
| S2S | System-to-System (gaming protocol) |
| S2S | Site to Site |
| S2S | Side to Side |
| S2S | Server to Server |
| S2S | System to System |
| S2S | Ship to Shore |
| S2S | Site-to-Site |
| S2S | Surfaced Two Sides (lumber) |
| S2S | Student 2 Student (Washington) |
| S2S | Source to Settle |
| S2S | Service-to-Service (software) |
| S2S | So to Speak |
| S2S | Swim to Survive (Canada) |