PS1
| Acronym | Definition |
|---|---|
| PS1 | Play Station 1 (Sony) |
| PS1 | Photosystem 1 (photosynthesis) |
| PS1 | Public School 1 (West New York School District; New York, NY) |
| PS1 | Port Security Specialist 1st Class (USCG rating) |
| PS1 | Personal System 1 |
| PS1 | Personnel Specialist 1st Class (USN Rating) |