Most rollercoasters in one theme park
Six Flags Magic Mountain
20 total number
United States (Valencia)

The theme park with the most rollercoasters is Six Flags Magic Mountain, which is located in Valencia, California, USA. As of the opening of Wonder Woman Flight of Courage on 16 July 2022, the park has 20 rollercoasters.

Six Flags Magic Mountain opened in 1971, initially with just two rollercoasters – the minecart-style Gold Rusher and a children's coaster called the Magic Flyer. It became a significant destination for rollercoaster fans with the opening of the Great American Revolution (Now the New Revolution) in 1976. This was one of the first modern looping rollercoasters, which used state-of-the-art steel tube framing to support a twisting, looping track.