Police were questioning the 35-year-old man before bringing him to Central Booking Saturday night, law enforcement sources said.
The suspect is a Manhattan resident with a history of 13 arrests, including five for felonies, the sources said.
The “Ghostbusters” star, 67, had been walking on Central Park West near West 70th street on his way to his nearby apartment when the stranger suddenly slugged him, knocking him to the ground.
The disturbing, unprovoked attack was caught on video, and other images of the suspect were captured from surveillance cameras.
Moranis suffered pain in his head, back and right hip as a result of the attack.