New Madison Square Garden is an indoor sports stadium in the New York City borough of New Manhattan. It appears in the Fast Forward season of the Teenage Mutant Ninja Turtles (2003 TV series).
The Garden first appears in the episode "Headlock Prime". When Raphael spots an advertising blimp promoting a galactic wrestling match to be held at New Madison Square Garden, he is elated. He has been wanting to get out of Cody's penthouse and do things they've never been able to do before. When none of his brothers want to go with him, he storms off to go alone. Splinter considers it a bad idea because he's afraid Raphael will get into trouble, so Leonardo agrees to go with him. Staying out of trouble does not go so well for the pair of turtles.
The site of the Digi-Game Convention, the Garden appears in "The Gaminator". The convention showcases the latest in gaming systems. It is there that Viral devises a new plan for destroying the turtles.
In "Graduation Day: Class of 2105", Michelangelo makes a trip to New Madison Square Garden in search of one piece of his nunchaku, which Splinter has divided up as part of a test he's devised to help his son get back on the ninjutsu path. At the Garden, Raphael and Cody pit two robotic members of the O'Neil Tech hockey team against Michelangelo. The unwitting "puck" in a makeshift hockey game, Mikey finally outwits the robots to reach his prize.