A maniac randomly punched a 66-year-old stranger repeatedly in the face in a Manhattan subway station and then tried to kick him onto the tracks — moments after he hit a younger man standing on the same platform, cops said Monday.

Both men were attacked around 4:30 p.m. Sunday while standing on the southbound platform at the N/R/W subway at West 49th Street and Seventh Avenue in Midtown, cops said.  

The older man fell to the platform after he was struck repeatedly with a closed fist, cops said. The brute then kicked him in an apparent effort to make him to fall to the tracks.

He was taken to Bellevue Hospital for head injuries and was expected to survive, cops said.

A 40-year-old, who was randomly hit in the face by the same man a few minutes earlier, witnessed the elderly man’s assault, cops said.

“He saw the 66-year-old being assaulted down the platform,” a police source said.

The younger man suffered swelling to his face and was treated by EMS on the scene, cops said.

The attacker, who fled to the street after the beatings, was described as being in his 30s and standing about six feet tall with a scar on his forehead, police sources said.