Tohru Ukawa (宇川 徹, Ukawa Tōru) (born May 18, 1973) is a former Grand Prix motorcycle road racer from Japan.

Ukawa began his Grand Prix career in 1994, racing in the 250cc world championships.

He finished second to Valentino Rossi in the 1999 World Championship.

In 2002, he moved up to the MotoGP class, riding for the factory Repsol Honda Grand Prix team, finishing third overall behind teammate Rossi, with a win at Phakisa in South Africa.

[1] In 2003, he finished seventh overall for the Sito Pons Pramac team before returning to a factory testing role.