The images show the suspects who police say have mugged four people in the last three weeks.
Investigators say the young men confront pedestrians and take their cell phones and other property.
In two cases, they allegedly punched the victims in the face.
All the robberies happened on the Upper West Side and Morningside Heights.
The first incident occurred on September 23 just before 4 p.m. on West 125th Street, while the most recent was on October 7, just after 4 p.m. on Broadway and West 86th Street.
All the incidents happened between 3 p.m. and 4:30 p.m.
The first suspect is described as a Hispanic male, 17 or 18 years old, standing about 6-foot-1. He was last seen wearing a white tank top with blue jeans and a black backpack.
The second is a black male, 17 or 18 years old, standing about 5-foot-9. He was last seen wearing a multi-colored long sleeve shirt and was carrying a backpack.
Anyone with information in regards to these robberies is asked to call the NYPD's Crime Stoppers Hotline at 800-577-TIPS.