Vorotynsk (Russian: Вороты́нск) is a former town located 17 km south of Kaluga in the Ugra National Park.

[3] The town is thought to have been situated slightly downstream from the confluence of the Oka and the Ugra Rivers.

It was one of the Upper Oka towns and seat of the mediaeval Princes Vorotynsky.

[4] In 1480, Vorotynsk was the principal Tatar base during the Great standing on the Ugra river.

[4] The village of Spas-on-the-Oka, which now marks the spot, is dominated by Saviour Vorotynsk Monastery, founded by one Prince Vorotynsky in the early 16th century.