OPK may refer to:
- Oak Park railway station, Melbourne, Australia (Metro Trains station code)
- Olli-Pekka Kallasvuo, former CEO of Nokia
- Ovulation prediction kit
- United Instrument Manufacturing Corporation (Russian: Объединённая приборостроительная корпорация)
This disambiguation page lists articles associated with the title OPK.
If an internal link led you here, you may wish to change the link to point directly to the intended article.
If an internal link led you here, you may wish to change the link to point directly to the intended article.