Ai Otsuka (大塚 愛, Ōtsuka Ai, born September 9, 1982) is a female Japanese pop singer-songwriter and pianist from Osaka, Osaka Prefecture, Japan. She is a popular artist on the avex trax label and is best-known for her 2003 hit Sakuranbo, which stayed in the Top 200 Oricon Weekly Singles Chart for 101 weeks.