The superior longitudinal muscle of tongue or superior lingualis is a thin layer of oblique and longitudinal fibers immediately underlying the mucous membrane on the dorsum of the tongue.

[1] It arises from the submucous fibrous layer close to the epiglottis and from the median fibrous septum, and runs forward to the edges of the tongue.

The superior longitudinal muscle of the tongue is supplied by the hypoglossal nerve (CN XII).

[2] The superior longitudinal muscle of the tongue works with the other intrinsic muscles to move the tongue.

[1] This article incorporates text in the public domain from page 1130 of the 20th edition of Gray's Anatomy (1918) This muscle article is a stub.