Ai Shibata (柴田 亜衣, Shibata Ai?, born May 14, 1982 in Dazaifu, Fukuoka) is a Japanese swimmer. At the 2004 Summer Olympics, she won the gold medal in the 800 meter freestyle race and became the first ever female gold medalist for Japan in a freestyle event. She graduated from the National Institute of Fitness and Sports in Kanoya.
Her brother is also a world class swimmer.