James Bruce Tomkins (born 19 August 1965) is an Australian rower, seven-time World Champion and a three-time Olympic gold medalist.

[3] In 1985, Tomkins first made the Australian national team as stroke of the senior men's eight for the 1985 World Rowing Championships in Hazewinkel Belgium.

[8] In 1990 with his Mercantile clubmates Samuel Patten and Mike McKay and Nick Green from the Melbourne University Boat Club, Tomkins began racing an Australian representative coxless four.

The crew repeated its gold medal performance at the 1996 Summer Olympics, this time with Drew Ginn replacing Andrew Cooper.

Tomkins and Long were selected to represent Australia, and at the Olympics, they finished third behind France and the United States, just 1.3 seconds out of first place.

In 2003, Ginn and Tomkins reversed the prior years result winning the 2003 World Championship, with Pinsent and Cracknell placing fourth.

Ginn and Tomkins would go on to win the coxless pair at the 2004 Summer Olympics, leading at every mark, beating Croatia by 2 seconds, with South Africa claiming the bronze.

[9] He competed in his sixth Olympic Games at Beijing[2] following the disqualification of the Russian Federation boat as a result of a doping scandal.

[2] He is one of four athletes to compete in rowing at six Olympics, along with Romanian Elisabeta Oleniuc Lipă in 2004, Canadian cox Lesley Thompson, and Estonian Jüri Jaanson.