Investigators say the suspects were in the back seat of a cab at East 236th Street and Oneida Avenue early Saturday morning, when one suspect pulled a gun on the driver.
According to officials, the two other suspects then attacked and robbed the driver.
The woman who pulled the gun is said to have several tattoos on her arms and was last seen wearing a baseball cap with a Nike logo and sunglasses.
The other woman was last seen wearing a New York Knicks hat and a striped hooded sweatshirt.
Cops say their male accomplice was wearing a Chicago Bulls baseball cap.
Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.