| 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) |