Walking with... is a palaeontology media franchise produced and broadcast by the BBC Natural History Unit. The franchise began with the critically acclaimed series Walking with Dinosaurs (1999), created by Tim Haines. By far the most watched science programme in British television history, Walking with Dinosaurs spawned numerous companion material and four sequel series: Walking with Beasts (2001), Walking with Cavemen (2003), Sea Monsters (2003) and Walking with Monsters (2005). Each series uses a combination of computer-generated imagery and animatronics, incorporated with live action footage shot at various locations, to portray prehistoric animals in the style of a traditional nature documentary.

The Walking with... programmes were praised for their special effects and for their science communication. Though largely praised by scientists for the effort to adhere to science and for portraying prehistoric life as animals rather than movie monsters, some academic criticism has been leveled at the series for not making clear through their narration what is speculative and what is based in fact.

In addition to the five main series, the success of Walking with... also led to the production of the Walking with Dinosaurs special episodes The Ballad of Big Al, The Giant Claw and Land of Giants. The franchise has also been accompanied by several books, merchandise, video games and the live theatrical show Walking with Dinosaurs − The Arena Spectacular. In 2013, a movie based on Walking with Dinosaurs, with the same name, was directed by Neil Nightingale and Barry Cook.