PLK
| Acronym | Definition |
|---|---|
| PLK | Polskie Linie Kolejowe (Polish Railways) |
| PLK | Present Level of Knowledge |
| PLK | Peter Lynn Kites (New Zealand) |
| PLK | Partia Liberale e Kosovës (Liberal Party of Kosovo) |
| PLK | Punch Line King (lyricist Lloyd Banks) |
| PLK | Place Last Known (search and rescue) |
| PLK | Pasadena Latin Kings (gang) |
| PLK | Piikkiön Laatukurkut (Finnish scouting group) |