Petit Best 10 (プッチベスト10) is the 10th album in the Petit Best series, which are annual compilations released at the end of the year that feature best hits from the artists of Hello! Project during that year, with an occasional remix or new song included. It was released on December 2, 2009. This album featured 5 tracks previously unreleased on a CD. Tracks 4, 5, 8, 9, and 10 are new tracks from the revival units: Petitmoni V, Tanpopo#, Aa!, Shin Minimoni, and High-King.