Ymerbukta is a bay in Oscar II Land at Spitsbergen, Svalbard. The glacier Esmarkbreen debouches into the bay. It is about six kilometer long, located at the northern side of Isfjorden. The bay is separated from Trygghamna by the mountain chain Värmlandryggen.
Coordinates: 78°16′03″N 13°59′02″E / 78.26750°N 13.98389°E