Ostrog (disambiguation)
Ostrog stands for:
- Ostrog , a fortified settlement in ancient Russia
- Russian name for the Ukrainian city Ostroh
- German name of Ostróg (Racibórz) , district of Racibórz, Poland
- Name of a monastery in Montenegro, see Ostrog Monastery
- Family name of the Russian criminal Michael Ostrog, see Jack the Ripper # Suspect