Osamu Miyazaki (born 23 January 1966) is a Japanese former professional Grand Prix motorcycle road racer.

After riding with Aprilla for three seasons, he raced with Yamaha, and helped them with the development of the TZ 250 and YZF-R6.

[1] At that time, he migrated to the Grand Prix, initially competing in the 1991 Japanese race.

[1][2] He achieved his first win at the 2002 Japanese motorcycle Grand Prix at Suzuka while racing with Motorex Daytona Yamaha.

[1] He started his own team in 2008 and took pole position the following year in the third round at Autopolis, but suffered a serious injury at the end of the season.