Moštanica Monastery, Serbian Orthodox monastery in Kozarska Dubica, Bosnia and Herzegovina.

Moštanica is a Serbian Orthodox monastery near Kozarska Dubica with a stone church at the center of its complex. The grounds include guest quarters, a chapel, a bell tower, and picnic areas spread along the Moštanica stream.

The monastery first appears in written records in 1579 when Patriarch Makarije had connections with the Ottoman Grand Vizier Mehmed-paša Sokolović. These ties helped the community survive and develop during Ottoman rule.

The monastery's name comes from the Moštanica stream, which local tradition says was crossed by 44 small wooden bridges made of felled beech trunks; one such bridge still stands by the monastery. The monastery holds wax and a stone from Christ's tomb, and a slipper from the relics of Saint Basil of Ostrog. The Zbor kod Manastira Moštanice gathering is held here.

The monastery lies 12 km south of Kozarska Dubica, at 202 m above sea level in the Moštanica river valley on the northern slopes of Kozara, in the sheltered dip of Mala Gradina among linden trees. The complex holds the church, a 1972 guest house renovated and enlarged in 2005, and a small chapel with bell tower dedicated to Saint Basil of Ostrog, built in 2002.

The monastery keeps wax and a stone from Christ's tomb, and a slipper from the relics of Saint Basil of Ostrog. Tradition also holds that Saint Theodore Komogovinski was burned on the spot where the church stands, and that part of his hand survived; it was moved in the 18th century to Komogovina, where the monks built a new church they again named Moštanica.