What is the US adaptation of the British TV show Dragon's Den called?

The US adaptation of the British TV show Dragon's Den is called Shark Tank.

The programme keeps the central format: entrepreneurs present businesses to wealthy investors and seek funding in exchange for equity. In the United States, the investors are called “sharks” rather than “dragons,” giving the American edition its title.

Shark Tank premiered on ABC in August 2009. The first episode featured investors including Kevin O'Leary, Barbara Corcoran, Daymond John, Robert Herjavec and Kevin Harrington. Mark Cuban joined the regular panel during the show's second season.

The format originated with the Japanese programme Money Tigers and was adapted in several countries. A common mix-up is to use Dragon's Den as the American title, but Shark Tank is the established US name.