Neoterebra sanjuanensis is a species of sea snail, a marine gastropod mollusk in the family Terebridae, the auger snails.
The shell of Neoterebra sanjuanensis is relatively heavy with a broad apical angle and reaches a length between 16 mm and 30 mm. It is uniformly yellowish-white in color. The whorls feature a doubled subsutural band that is notably wide, covering approximately 60% to 70% of the whorl's width.
This species occurs in the Pacific Ocean off Mexico and Panama.