Dallas Campbell is a well-known British television presenter whose credits include BBC One's Supersized Earth, Bang Goes the Theory (BBC America, 2013), Egypt's Lost Cities, BBC Four's Horizon Guides, and The Drake Equation: The Search for Life. Before joining the BBC, he presented Channel Five's technology program The Gadget Show, as well as Dallas Campbell's Guide to the Impossible, also known as Dallas in Wonderland, a comedy science series he co-produced with R.J. Cutler for Discovery Science in the United States.

Prior to moving into factual presenting, he worked as an actor in several of the UK's most popular television shows, including Casualty, Doomwatch, A Touch of Frost, and Moll Flanders. In theatre, he frequently collaborated with the late, legendary director Ken Campbell on various projects, most notably The Warp, the world's longest play, which ran for 29 hours.

He wrote and directed the short film No Deposit No Return.

He is married to Victoria Goodall, the sister of actress Caroline Goodall.