Toshiya Watanabe (Japanese: 渡边俊哉) is a former taijiquan athlete from Japan who was a world champion.

Watanabe's international debut was at the 1995 World Wushu Championships where he won a silver medal in taijiquan and a bronze medal two years later at the 1997 World Wushu Championships.

[3] He then achieved another silver medal victory in men's taijiquan at the 1998 Asian Games.

[4][5] The following year, he won a bronze medal at the 1999 World Wushu Championships.

[7] In 2001, he achieved a bronze medal at the 2001 East Asian Games and was a double silver medalist at the 2001 World Wushu Championships.