Splash Lagoon Indoor Waterpark Resort is a Polynesian-themed large indoor waterpark located in Erie, Pennsylvania.

The park is approximately 80,000 square feet. It features seven water slides, two hot tubs, one large activity pool, a four-story Tiki activity tree house, and a children’s area. The resort is connected to a Holiday Inn, Hawthorn Suites, and a Comfort Inn, along with Hooch and Blotto’s restaurant. Splash Lagoon features a 6,500-square-foot arcade and a large Laser Tag area. The water park opened in 2003 and has one addition. Scott Enterprises, a local franchising company, built Splash Lagoon. Water slides swerve in and out of the building, giving it a distinct look.

In 2008, Water Parks Resorts Today named Splash Lagoon as sixth largest water parks hotels in North America.