Østbyen is a borough of the city of Trondheim in Trondheim Municipality in Trøndelag county, Norway.

The borough of Lerkendal lies to the southwest, the borough of Midtbyen lies to the northwest, and Malvik Municipality lies to the east.

The Trondheimsfjorden lies to the north.

The borough consists of the areas of Møllenberg, Nedre Elvehavn, Rosenborg, Lade, Strindheim, Brundalen, Charlottenlund, Jakobsli, Ranheim and Vikåsen.

This Trøndelag location article is a stub.