PSEi
| Acronym | Definition |
|---|---|
| PSEi | Philippine Stock Exchange, Inc. |
| PSEi | Pro Sports & Entertainment, Inc. |
| PSEi | Public Safety Equipment & Installations, Inc. (Miami Gardens, FL) |
| PSEi | Policealne Studium Ekonomiczno Informatyczne (Polish: Post Secondary Economic Information Study) |
| PSEi | Public Sector Ethics Index |
| PSEi | Portal-Systemic Encephalopathy Index |
| PSEi | Public Speaking Evaluation Instrument (La Salle University; Philadelphia, PA) |