Robert Havlin "Bob" Paul (June 12, 1830 – March 26, 1901) was a law enforcement officer in the American Southwest for more than 30 years. He was sheriff of Pima County, Arizona Territory from April 1881 to 1886 and a friend of Deputy U.S. Marshall Virgil Earp and his brother Wyatt Earp. At 6 feet 6 inches (1.98 m) and 240 pounds (110 kg), he was described as "larger than life". Others described him as "powerful, fearless and very lucky".