Roztoka [rɔsˈtɔka] is a village in the administrative district of Gmina Dobromierz, within Świdnica County, Lower Silesian Voivodeship, in south-western Poland.

An earlier city seal shows a wooden stick with two axes (rode).

The place is best known for the Rohnstock Castle of the same name, where Frederick the Great stayed in 1745 during the Battle of Hohenfriedberg.

Until 1945, Rohnstock, which had around 1,600 inhabitants at the time, belonged to the district of Jauer in the German province of Lower Silesia.

The last German inhabitants were expelled in July 1946 after the ethnic cleansing of the region by Polish authorities after the annexation of Silesia.