The marsh owl (Asio capensis) is a medium to large species of owl in the family Strigidae.
Medium-sized, dark brown with a pumpkin-shaped head with small 'ear' tufts. The facial disc is pale buff, with a distinct dark brown rim with buff speckles. There is a dark brown area around the eyes, which are also dark brown. Its ear-tufts are earth-brown and quite small, often not visible, and set near the centre of the forehead. The tail is dark brown, barred pale buff with a whitish tip. Tarsi are feathered pale tawny-buff and toes are covered with pale buffish plumes, leaving the dark brown tips bare. Claws are blackish.