The teres minor (also teres minor muscle, latin: musculus teres minor) is a round muscle of the shoulder girdle.
The teres minor muscle arises from the lateral border of the scapula.
The fibers of the teres minor pass laterally to the humerus and insert onto the greater tubercle of the humerus.
The teres minor is one of the rotator cuff muscles that stabilizes the shoulder and provides external rotation and extension of the upper arm.
The teres minor is innervated by the axillary nerve.