Suzuki MotoGP is the official factory-backed team of Suzuki in the MotoGP World Championship. The team were competing under the name Rizla Suzuki MotoGP. Suzuki withdrew from competition at the end of the 2011 MotoGP season. However, in June 2013, Suzuki announced they will end their hiatus and return to MotoGP with a factory team in 2015.
Suzuki first entered a works team in the 500cc Grand Prix World Championship in 1974 with riders Barry Sheene and Jack Findlay riding the Suzuki RG500. A second-place finish by Sheene in the opening round was the best result of the season. The team's first victory came in 1975, a pole-to-finish win by Barry Sheene at the Dutch TT. Sheene finished the season 6th overall with two wins.
Barry Sheene won the rider's championship in 1976 with a total of five wins. Sheene's second 500cc rider's championship came in 1977 with six wins. Team mate Steve Parrish was fifth.
In 1978 with two wins on the new Suzuki RGA, Sheene finished second in the championship behind Yamaha rider Kenny Roberts. Team mate Wil Hartog was fourth overall, also won two races. The 1979 championship was again won by Roberts with Virginio Ferrari finishing second, Barry Sheene third and Wil Hartog fourth, all riding the new Suzuki RGB.
Randy Mamola joined Suzuki in 1980. While Yamaha rider Roberts won his third title, Suzuki riders Mamola was second, and Marco Lucchinelli third. Lucchinelli became the 500cc World Champion in 1981 riding the new Suzuki RG 500 gamma for the Roberto Gallina racing team.
Lucchinelli left Suzuki to join Honda in 1982. He was replaced on the Gallina team by Franco Uncini who went on to win the World Championship with five wins. Uncini was severely injured at the Assen TT in 1983 and was unable to defend his title. Suzuki withdrew factory support at the end of the season.