Regret (disambiguation)

Regret may refer to
 * Regret, a song by apol featuring Megurine Luka.
 * Regret, a song by Toa featuring Hatsune Miku.
 * Regret Message, a song by Akuno-P featuring Kagamine Rin.
 * Regrets and Floatage, a song by Powapowa-P featuring Hatsune Miku.