This is a list of animated characters from the Bob the Builder television franchise. The titular protagonist named Bob, is a general contractor and has a business partner, secretary, laborer and best friend named Wendy, as well as five main anthropomorphic construction vehicles that help him out: Scoop the digger, Muck the bulldozer, dumper and dump truck, Lofty the crane, Dizzy the cement mixer and Roley the steamroller, also known as the Can-Do Crew. In Project: Build It and Ready, Steady, Build!, there were more newly added anthropomorphic construction vehicles that help Bob out, likewise for the 2015 reboot.

Humans Main Bob (voiced by Neil Morrissey in the UK and by William Dufris in the original series, Greg Proops in series 10-14 of Project: Built It and Marc Silk in series 15 and 16 of Project: Built It and Ready, Steady, Build! in the US; also voiced by Lee Ingleby in the UK and Colin Murdock in the US in the reboot series) is a general contractor and head of his own roadway based in Bobsville and later in Sunflower Valley, and now Fixham Harbour and then Spring City. Bob is from a family of general contractors – his father Robert is also a general contractor, and so was his grandfather Billy. He is assisted by Wendy and a host of anthropomorphic road vehicles, including tractors, in various projects in and around the town. He is the owner of Pilchard and he is not very good with computers. Some of the problems in the show arise from Bob's habit of forgetting to turn his mobile phone on. He is widely mistaken as the one with the "Can we fix it?" catchphrase when it was actually Scoop the digger who asks it; however Bob does ask his team "Can we build it?" in the reboot series. Wendy (voiced by Kate Harbour in the UK and Lorelei King in the US in the original series, Project: Built It and Ready, Steady, Build!; also voiced by Joanne Froggatt in the reboot series) is Bob's business partner, secretary, laborer and best friend who runs the office and always keeps the business in order, and often organizes tools and equipment. She is also seen doing construction work in many episodes. Wendy is often worried about Bob's cat, Pilchard, as shown in the episode "Pilchard in a Pickle" and in the song "Find That Cat". Leo (voiced by Jacob Scipio in the UK and Daniel Bacon in the US) is a college student, Bob's apprentice and Curtis' son. Introduced in the 2015 series.

Recurring Farmer Percy Pickles (voiced by Neil Morrissey in the UK, William Dufris in the original series and Vincent Marzello in Project: Build It and Ready, Steady, Build! in the US; also voiced by Nick Mercer in the reboot series) is a nearby farmer, and a very good friend of Bob who often helps out in his construction projects. He is the owner of Travis, Spud, Scruffty, Sumsy and Packer. Mrs. Potts (voiced by Kate Harbour in the UK and Lorelei King in the US) is a Bobsville resident and the owner of Tommy. Mrs. Percival (voiced by Kate Harbour in the UK and Lorelei King in the US) is Bobsville's local school headteacher. Mr. Bernard Bentley (voiced by Rob Rackstraw in the UK, the US version starting Project Build It! and Ready Steady Build! and Alan Marriott in the US version of the original series; also voiced by Nick Mercer in the UK and Ian James Corlett in the US in the reboot series) is Bobsville's building inspector and later Mayor of Sunflower Valley and then Fixham Harbour's building inspector, and Barbara Bentley's husband. His original catchphrase is "Oh, my word!" In the reboot series, he is Mayor Madison's right-hand man and gains a much more nerdy, clumsy personality and a brand new catchphrase which is "Oh, dear me! Mayor Madison will be here any second!" Mr. Benjamin Dixon (voiced by Rob Rackstraw in the UK and Alan Marriott in the US) is Bobsville's local postman. Mr. Jeremy Ellis (voiced by Rob Rackstraw in the UK and Alan Marriott in the US in the original series and Rupert Degas in the US version of Project: Build It in the episode, "Scrambler and the Colorful Cave" (which is the seventh episode of the eleventh series and the one-hundred-and-thirty-ninth episode of Bob the Builder altogether) is the manager of the Bobsville museum. Mr. Bill Beasley (voiced by Rob Rackstraw in the UK and William Dufris in the original series, Greg Proops in series 10-14 and Marc Silk in series 15 and 16 of Project: Build It in the US) is a clumsy and indecisive Bobsville, later Sunflower Vallery resident and a regular customer of Bob and his team. Mr. Angelo Sabatini (voiced by Neil Morrissey in the UK, William Dufris in the original series and Vincent Marzello in Project: Build It in the US) is Carlo and Cassia Sabatini's father, the owner and chef of the local pizza shop in Bobsville and the Sunflower Valley bakery, as well as Sophia Sabatini's husband. Mrs. Barbara Bentley (voiced by Kate Harbour in the UK and Lorelei King in the US) is Mr. Bentley's wife and a good friend of Bob and the team. J.J. (voiced by Colin McFarlane) is the manager of the suppliers yard, Molly's father, the owner of Skip and Trix, and the new owner of Hamish. Molly (voiced by Llewella Gideon in the UK and Lachele Carl in the US) is J.J.'s daughter who helps him out a lot in the suppliers yard. Robert (voiced by Richard Briers in the UK and Vincent Marzello in the US in the original series and Lee Ingleby in the reboot series) is Bob and Tom's father, Dorothy's husband and a retired general contractor. He built most of Bobsville, which was named after him. He helps Bob and the team restore an old castle. He later takes the building jobs in Bobsville while the team are in Sunflower Valley. Dorothy (voiced by June Whitfield in the UK and Lorelei King in the US) is Bob and Tom's mother and Robert's wife. She later takes over Wendy's old job as the secretary at the Bobsville building yard while the team are in Sunflower Valley. Sunny (voiced by Rupert Degas) is Marjorie's son and Saffron's brother. Saffron (also voiced by Emma Tate) is Marjorie's daughter and Sunny's sister. Carlo (also voiced by Rupert Degas) and Cassia Sabatini (also voiced by Emma Tate) are Mr. and Mrs. Sabatini's twins. Baz (also voiced by Rupert Degas) is an Australian sheep shearer and Farmer Pickles' cousin. Annie Pickles (also voiced by Kate Harbour in the UK and Lorelei King in the US) is a seaweed farmer and Farmer Pickles' cousin. Meg MacDonald (also voiced by Kate Harbour) is a Scottish milkmaid who was originally a goat herder. Piper MacDonald (also voiced by Rupert Degas) is Meg's nephew who assists her with her dairy products. Pablo Sabatini (also voiced by Rupert Degas in the UK and Marc Silk in the US) is Mr. Sabatini's brother who runs the ice cream parlour in Sunflower Valley. Bradley "Brad Rad" Radical (also voiced by Rupert Degas) is the owner of Fixham Harbour's surf school. Mr. David Mockney (also voiced by Rupert Degas) is the manager of the Fixham Harbour museum. His name is a reference to British artist David Hockney. Mrs. Toosie (voiced by Kate Harbour in the UK and Emma Tate in the US) is the owner of Fixham Harbour's local toy shop. 2015 series Mayor Maria Madison (voiced by Lucy Montgomery in the UK and Nicole Oliver in the US) is the mayor of Spring City. She is involves in a running gag, in which she tries to get her picture taken for the newspaper or a magazine, but it always goes wrong. For example, in "Sky-High Scoop", she tries to get her picture taken at the top of the new skyscraper and Gull lands on her and she tries to shoo her away. Chef Seymour Tattie (voiced by Iain Lauchlan) is a celebrity chef. The Spring City Rockets are active members of the Spring City community. Saffi (voiced by Mia Hope in the UK and Kazumi Evans in the US) is one of the Spring City Rockets. Her hair is tied in pigtails, and she owns a pet. JJ (voiced by William Haresceugh in the UK and Erin Mathews in the US) is also a member of the Spring City Rockets. JJ is not to be confused with J.J. from the original series. Brandon (voiced by Lewis Andrews in the UK and by Vincent Tong and Dylan Schombing in the US) is also a member of the Spring City Rockets. Mila (voiced by Holly Hazelton in the UK and Rebecca Shoichet in the US) is also a member of the Spring City Rockets. Anish Bose (voiced by Kulvinder Ghir) is an archaeologist and Saffi's father. Jenny Dobbs (voiced by Lucy Montgomery in the UK and Nicole Oliver in the US) is a zookeeper at Fixham Zoo. Tilly Corner (voiced by Sarah Hadland in the UK and Erin Mathews in the US) is a vet. Curtis (voiced by Danny John-Jules) is Leo's father and the owner of the local service station.

Minor Lennie Lazenby (voiced by Chris Evans in the UK and the US dub of A Christmas to Remember and Alan Marriott in the US dub of "Roley and the Rock Star") is Bobsville's resident rock star and guitarist and lead singer of "Lennie and the Lazers" rock band. Bunty Ferguson (voiced by Alison Steadman in the UK and Lorelei King in the US) is the mayor of Bobsville who appeared in two episodes. Tom (voiced by Stephen Tompkinson in the UK and Rupert Degas in the US) is Bob's fraternal twin brother who works as a zoologist. Banger (voiced by Noddy Holder) is Lennie and the Lazers' roadie. Jenny (voiced by Kate Harbour in the UK and Lorelei King in the US) is Wendy's sister. Mr. Adam Fothergill (voiced by Neil Morrissey in the UK and Alan Marriott in the US) is a Bobsville resident and computer handyman, who is plagued with allergies. He is Hamish's first owner, but he gave Hamish away to J.J. and Molly after he discovered that he was allergic to him. David Dixon (voiced by Neil Morrisey in the UK and Alan Marriott in the US) is a very famous football goalkeeper and Mr. Dixon's brother. Dr. Florence Mountfitchet (voiced by Brenda Blethyn in the UK and Lorelei King in the US) is a member of Local Heritage. She asked Bob and the team restore an old castle. Pam Goody (voiced by Kate Harbour in the UK in the original series and Lorelei King in the US in Project: Build It episode: "Wendy's Party Plan" as a speaking cameo) is the manager of the Arts Centre. Mrs. Sophia Sabatini (voiced by Kate Harbour in the UK and Lorelei King in the US) is Mr. Sabatini's wife and Carlo and Cassia's mother. Jana Von Strudel (voiced by Ulrika Jonsson) is an Austrian yodeler, the host of the Bobblesberg Winter Games and the former owner of Zoomer. Marjorie (voiced by Emma Tate) is the new manager at Farmer Pickles' factory. Pirate Brickbeard (voiced by Rupert Degas) was the pirate who founded Fixham Harbour. He has a ship known as the Boney Beard. He has a golden hammer that he hides on the Boney Beard and leaves clues as to its whereabouts around Fixham. His catchphrase is "No one will ever find my Golden Hammer! Har, har!" Tony Toberomi (voiced by Rob Rackstraw in the UK and Marc Silk in the US) is the owner and manager of the Fixham Harbour Dinosaur Park. 2015 series Henry Corner (voiced by John Sheahan) is a Spring City resident who marries Vet Tilly in "Wild Wild Wedding". He works at the racetrack. Dash Lightning (voiced by Steven Kynman) is a star of children's films and TV shows. Dash is very well known for saying "With a zoom! Boom!! Lightning strikes twice!" Dash has a big passion for tools and equipment and consequently is in awe of Bob. Mei Moon (voiced by Jing Lusi) is a scientist who works at the observatory. Conrad (voiced by Brian Cox) is a former general contractor and Ace, Crunch and Thud's former owner. He helps Bob and the team build Spring City's new dam, but is very angry when Bob is given the job, so he attempts to sabotage the dam to ruin Bob's reputation and take over the build himself. He is defeated and sentenced to community service. Roland (voiced by Mathew Baynton in the UK and Brian Drummond in the US) is a man who works at the warehouse. Leo called him “Mr. Sweep” in “Boogie Woogie Wonderland”.