Tivoli, also known as Tivoli Gardens, is an amusement park and pleasure garden in Copenhagen, Denmark. The park opened on 15 August 1843 and is the second-oldest operating amusement park in the world, after Dyrehavsbakken in nearby Klampenborg, also in Denmark.

With 4.6 million visitors in 2017, Tivoli is the second-most popular seasonal theme park in the world after Europa-Park in Germany. The amusement park was first called "Tivoli & Vauxhall"; "Tivoli" alluding to the Jardin de Tivoli in Paris (which in its turn had been named after Tivoli near Rome, Italy), and "Vauxhall" alluding to Vauxhall Gardens in London.

From its beginning Tivoli included a variety of attractions: buildings in the exotic style of an imaginary Orient: a theatre, band stands, restaurants and cafés, flower gardens, and mechanical amusement rides such as a merry-go-round and a primitive scenic railway. After dark, colored lamps illuminated the gardens. On certain evenings, specially designed fireworks could be seen reflected in Tivoli's lake, a remnant of the moat surrounding the city fortifications.

The park is best known for its wooden roller coaster, 'Rutschebanen', or as some people call it, 'Bjergbanen' (The Mountain Coaster), built in 1914. It is one of the world's oldest wooden roller coasters that is still operating today. An operator controls the ride by braking so that it does not gain too much speed during descent of the hills.

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