Dragons' Den is a British reality television business programme, presented by Evan Davis and based upon the original Japanese series. The show allows several entrepreneurs an opportunity to present their varying business ideas to a panel of five wealthy investors, the "Dragons" of the show's title, and pitch for financial investment while offering a stake of the company in return.

The first episode was broadcast on BBC Two on 4 January 2005. After 16 series on the channel, the show has been broadcast on BBC One since 2021. Reruns of previous episodes are still broadcast on BBC Two. The programme is produced by BBC Studios Factual Entertainment Productions and co-produced with Sony Pictures Television International, the owners of the format that is distributed worldwide. The show was also broadcast by UKTV channel Dave during the daytime and late nights between 2007 and 2013.