Ostrý, Mountain summit in Beskydy, Czech Republic.

Ostrý is a 1044 m summit in the north-eastern part of the Moravian-Silesian Beskids, rising from the Kalužný node between the Tyra (Tyrka) and Kopytná valleys. Seen from the north-east it forms a regular pyramid, which gave it its name. Its upper slopes are covered with beech forest, and the summit itself lies in the Čerňavina nature reserve, so no marked trail reaches it.

The mountain lodge on the southern slope at 954 m was built in 1935 under the patronage of the German Tourist Association. After the dissolution of Czechoslovakia by the Third Reich, the facility was taken over by the Cieszyn branch of Beskidenverein. Damaged at the end of the war, the building was thoroughly renovated and later expanded; it is now managed by the Czech Tourist Club, Trinec section.

The name Ostrý comes from the sharp pyramid shape the peak shows when seen from the northeast. Folk tales placed a small lake called Morské Oko on the summit, linked underground to the sea, where a rusalka sang on moonlit nights to lure shepherds from the mountain huts.

No marked trail leads to the summit itself, which lies in the Čerňavina nature reserve; hikers reach the turistická chata Ostrý at 954 m instead. The shortest approach is from the village of Tyra, about 3 km; other routes run roughly 5 to 7 km. In winter a groomed ski track leads to the lodge.

A protected nature reserve surrounds the peak and covers a substantial area of the mountain region. This conservation area was designated to safeguard the local ecosystem and landscape.