Miyazato Ai?? ?Miyazato Aiborn 19 June 1985 is a Japanese professional golfer who currently competes on the U.S.-based LPGA Tour (LPGA) and the Japan LPGA Tour (JLPGA) (LPGA of Japan Tour)

Miyazato was born in Higashi (Higashi, Okinawa), Okinawa Prefecture, Japan. As an amateur in 2003, she won a professional event on the Japan LPGA Tour (LPGA of Japan Tour) - the Dunlop Ladies Open in Miyagi Prefecture, which is where she was attending high school at the time. In her 2004 rookie season on the JLPGA Tour she won five tournaments. In February 2005, she represented Japan along with Rui Kitada winning the inaugural Womens World Cup of Golf. In 2005, she won six events on the JLPGA tour, and was the #2 ranked player on the JLPGA Tour behind Yuri Fudoh.

In winning the Japan Open Championship at age 20 in 2005, Miyazato became the youngest player on the JLPGA Tour to win a major. Furthering the notion that Miyazato has revived the JLPGA Tour after the retirement of Ayako Okamoto, over 32,000 people (the largest gallery ever to attend a JLPGA event) witnessed the final day of that tournament.

She dominated the U.S. LPGA Q-School (Qualifying school) and secured her tour card, enabling her to compete in the 2006 season. She finished under par for five of the six qualifying rounds, and finished 12 strokes ahead of the closest competitor, setting a record for the largest margin of victory on 4 December 2005. Back in Japan, on December 15, she played the opening rounds of the Okinawa Open, becoming the first Japanese woman to compete in a domestic mens professional event, although she failed to make the cut for the final rounds.

Miyazato earned her first LPGA Tour win at the 2009 Evian Masters, shooting 14-under par 274 to tie Sophie Gustafson who she then beat on the first playoff hole. She won her second and third LPGA Tournament at the first two tournaments of the year in 2010: the season opening Honda PTT LPGA Thailand and the HSBC Womens Champions.

She has endorsements deals with Suntory, Bridgestone Corporation, Japan Airlines, Oakley (Oakley (fashion)), Honda, Hisamitsu, Mitsubishi Electric, Meiji Seika and Yamaichi.

Her older brothers, Kiyoshi Miyazato and Y?saku Miyazato are also professional golfers.

As of 24 May 2010, she is ranked world No. 2 in Rolex Rankings, after Jiyai Shin.