Owned and operated by Cedar Fair, the park first opened in 1972 by the Taft Broadcasting Company in an effort to move and expand Coney Island, a popular resort destination along the banks of the Ohio River that was prone to frequent flooding. After more than $275 million in capital investments, the park features over 80 rides, shows and attractions including fourteen roller coasters and a 33-acre (13 ha) water park.

Throughout its history, Kings Island has appeared in popular sitcoms and has received widespread recognition for its record-breaking attractions and events. One of the park's most well-known attractions, The Racer, is often credited with reviving worldwide interest in roller coasters during the 1970s. Others, such as The Beast and Banshee, have set several world records including some of which are still standing. The park has also suffered through times of negative publicity, particularly surrounding the early demise of roller coasters The Bat and Son of Beast.

Kings Island is divided into several themed sections. The seasonal amusement park is open from early spring through Labor Day in September, and then reopens for several weekends in September and October for Halloween-themed events. In 2015, Kings Island was the second-most visited seasonal amusement park in the United States behind Cedar Point, with an estimated 3.34 million visitors. It was third overall for seasonal attendance in North America, which was led by Canada's Wonderland. Kings Island has won Amusement Today's Golden Ticket Award for having the "Best Kids' Area" in the world for fifteen consecutive years (2001–2015).

Kings Island's iconic entrance with the Eiffel Tower
An inverted roller coaster with seven inversions located in the former location of Thunder Alley and Son of Beast. It is the longest of its kind in the world.
Dinosaurs Alive! is an animatronic dinosaur themed area located at several Cedar Fair parks. Kings Island was the first park to open the attraction in 2011, while the other parks opened their attraction in 2012 or 2013. The version of this attraction at Kings Island is the world's largest animatronic dinosaur park
Vortex is a steel roller coaster at Kings Island located in Mason, Ohio. Designed and built by Arrow Dynamics at a cost of $4 million, the ride officially opened to the public on April 11, 1987. Vortex debuted as the tallest, full-circuit roller coaster with the highest drop in the world. It was also the first to feature six inversions.