James Patrick Vowles (born 20 June 1979) is a British motorsport engineer and Team Principal of Williams Racing.

[7] During his studies, he sought opportunities in various Formula One teams, aiming to apply his mathematical expertise in the racing industry; however, he encountered rejection from all of them, as they did not require mathematicians at the time.

[6][10] During his career in F1, he has worked with world champions Jacques Villeneuve, Jenson Button, Michael Schumacher, Lewis Hamilton, and Nico Rosberg.

Vowles played a key role in Brawn GP's remarkable success, as the team won eight races and both the drivers' and constructors' championships in its debut and only season.

[6] Vowles was also known for his radio communications with the drivers during the races, most notably his interactions with Valtteri Bottas whenever Hamilton needed to use him for a benefit.

[16] In January 2023, he announced he was leaving Mercedes to become the team principal of Williams Racing,[1][10][2] replacing Jost Capito who stepped down in December 2022.

[1] In July 2017, Vowles received an honorary degree of Doctor of Science for his achievements in motorsport from the University of East Anglia.