According to police, the 6 foot tall, 200-pound suspect, wearing a Yankees cap, walked to the teller in the bank at 78-01 37th Avenue about 3 p.m.
He passed a note to the teller while demanding money and then made off with an unspecified amount of cash, cops said.
No one was injured in the incident, authorities added.
The cops described the suspect as 35-years-old and was wearing a white striped shirt with sunglasses.
Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS (8477). The public can also submit their tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting their tips to 274637 (CRIMES) then enter TIP577. All calls are strictly confidential.