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My ranking of Dragons Den series:

Canada (Kevin/Robert from Shark Tank are in some seasons) UK Ireland

You can also watch the UK version of The Apprentice and Young Apprentice (teens). The US versions of the traditional The Apprentice are a bit old and the Celebrity Apprentice is not worth watching.

Dragons' Den is the show that Shark Tank is based on. It has run for many seasons in the UK and Canada (and short runs in Australia and Ireland and elsewhere). Episodes can be found on Youtube.

In turn, Dragon's Den was based on a Japanese show (The Tigers of Money).

How about Dragon's Den? The Canadian version is probably the closest counterpart to America's Shark Tank.