The TD Bank at 1801 Highway 17 South in North Myrtle Beach was robbed just before 5 p.m.Thursday.
North Myrtle Beach Police are looking for the robber, who is short and stocky and was last seen wearing a gray hoodie, dark toboggan, and possibly blue jeans.
The robber showed the teller a gun and gave her a note.
Public Information Officer Pat Dowling says the suspect's mustache may or may not be authentic.