It happened just after 10 p.m. on Jan. 29 at a gas station in the 5300 block of South Huntington Drive.
He entered the gas station and grabbed the clerk from behind, then demanded money from the cash drawer.
The clerk feared for her life and handed over the money.
The suspect fled in a late 90s, dark-colored sedan.
He is described as a white or light-skinned Hispanic man between 35 and 45 years old.
He is about 6'1" tall and weights approximately 230 pounds.
Anyone with information about the man or the robbery can call Detective Miguel Barajas at (323) 342-8988.