Action Park & New Jersey's Backyard

 is an amusement and water park located in Vernon, New Jersey, United States, on the grounds of the ski resort. It originally opened in 1978 and then rebranded as Mountain Creek Waterpark in 1998. It rebranded back to Action Park for 2014 and was bought by Carwardine Parks in 2016, who added the New Jersey's Backyard theme park to the property.