Ayaka Kimura (; born 30 October 1981 in Kobe, Hyōgo Prefecture) is a Japanese actress. She is married to professional golfer, Tanihara Hideto. She is a former member of "Hello!Project", a group of idol music groups produced by Tsunku. She debuted as a member of Coconuts Musume in 1999. She became the group's only member in 2004, but continued in "Hello!Project" under the name "Coconuts Musume Ayaka". In 2008, after nine years, she graduated from "Hello!Project" to pursue her career as an actress. She subsequently changed her name from Kimura Ayaka　to her current stage name, Nagate Ayaka ().