Peter Jones was a Dragon on every series of the British television programme Dragon's Den from its launch through series 20.
Jones joined the original panel when the BBC programme began in 2005 and became its longest-serving investor. His business interests have included technology, media, retail, and telecommunications, giving him a broad base for assessing contestants' ideas.
Several other well-known Dragons served for many series, but their tenures were not continuous across the whole period. Duncan Bannatyne, Deborah Meaden, Theo Paphitis, and Touker Suleyman each became strongly associated with the programme, yet all joined or left at different points.
Being present on every series is different from making the most offers or investing the largest total amount. The programme does not treat the Dragon with the longest tenure as an official winner, and individual deals remain subject to negotiation and due diligence after filming.