| Acronym | Definition |
|---|
| PTK | Phi Theta Kappa |
| PTK | Penilaian Tahap Kecekapan (Malay: Competency Assessment Level) |
| PTK | Polskiego Towarzystwa Kardiologicznego (Polish Cardiac Society) |
| PTK | Permission to Kill (gaming) |
| PTK | Protein Tyrosine Kinase (insulin receptor) |
| PTK | Portable Tool Kit |
| PTK | Phototherapeutic Keratectomy |
| PTK | Parents, Teachers and Kids |
| PTK | Polska Telefonia Komorkowa (Polish cellular telephony provider) |
| PTK | Praise the King |
| PTK | Pairwise Transient Key |
| PTK | Posta dhe Telekomi i Kosoves (Albanian: Post and Telekom Enterprise of Kosovo) |
| PTK | Post and Telecommunications of Kosovo (Kosovo, Serbia) |
| PTK | Performance Tool Kit |
| PTK | Polgari Törvény Könyv (Civil Code of Hungary) |
| PTK | Professional, Technical, and Kindred Workers (migration studies) |
| PTK | Pontiac, Michigan - Oakland County International (airport code) |