Splash Works, Water park in Vaughan, Canada

Splash Works is an outdoor water park located inside Canada's Wonderland in Vaughan, Ontario, and covers a large section of that entertainment complex. It features water slides of varying sizes, a wave pool, and a slow-moving river that loops around the area.

Splash Works opened in 1992 on 4 hectares at a cost of $6 million CAD, with four combo slides: Body Blast, Whirl Winds, Pipeline and Drop Zone. The 1996 expansion doubled it to 8.1 hectares, adding Whitewater Bay wave pool, the Black Hole tube slides and the Pump House spray ground, and required reconfiguring part of the Mighty Canadian Minebuster so a bridge could cross it. Later additions include Super Soaker and The Plunge (1999), Riptide Racer and Barracuda Blaster (2002), Typhoon and Splash Station (2015), Muskoka Plunge (2017) and Moosehorn Falls (2024).

The children's area opened in 1992 as Splash Island and was renamed Lakeside Lagoon in 2018, when it doubled in size and took on a Canadian theme. Moosehorn Falls, added for 2024, takes its name from waterfalls on the Moosehorn Trail in Fundy National Park, New Brunswick.

The park is entirely outdoors, so sunscreen and a hat are worth having at any time of day, not just at midday. Lockers are available on site, which makes it easier to leave personal belongings behind before heading to the slides or the pool.

A single admission to Canada's Wonderland generally covers entry to Splash Works as well, meaning visitors can move between roller coasters and water slides within the same day without paying twice. This makes it one of the few places where both types of park are genuinely part of the same experience rather than sold as separate destinations.