Mitino Buttress is the rounded ice-covered buttress extending 14 km in south-southeast to north-northwest direction and 7 km wide, rising to 2072 m in the west foothills of Bruce Plateau on Graham Coast in Graham Land, Antarctica. Two offshoots of the feature form Mezzo Buttress on the west and Strelcha Spur on the north respectively. It has steep and partly ice-free northwest, north and northeast slopes, and surmounts Birley Glacier to the northeast and Lawrie Glacier to the west.