Koseze (; , ) is a settlement on the left bank of the Reka River southwest of Ilirska Bistrica in the Inner Carniola region of Slovenia.
During the short ten-day Slovene Independence War in 1991, Yugoslav and Slovene troops met in a small engagement ending with a handful of casualties in the village of Koseze.
The small church in the settlement is dedicated to Mary Magdalene and belongs to the Parish of Ilirska Bistrica.