It happened around 11:25 a.m. at the Sun National Bank at 1402 Brace Road.
Police say he approached the teller with a demand note and said he had a gun.
After obtaining an undisclosed amount of cash, the man fled on foot.
The suspect is described as a black male, 25 to 30 years old, 5'4" tall with a thin build. He was wearing navy blue hooded sweatshirt with stripes, maroon sweatpants and a blue baseball cap.
Anyone with any information may contact Cherry Hill Police Detectives at 856-488-7833 or the Camden County Prosecutors Office at 856-225-8684.