Happy (disambiguation)

Happy may refer to:
 * HAPPY?, a song by peakedyellow featuring Kaai Yuki.
 * Happy Brand New Days, a song by Tsutaya Kouichi featuring galaco.
 * Happy Berry Happy, a song by Pincchio-P featuring Hatsune Miku.
 * A Happy Death, a song by Kikuo featuring Hatsune Miku.
 * Happy Drug, a song by peakedyellow featuring Kaai Yuki.
 * Happy everyday, a song by Koichikurin featuring Hatsune Miku.
 * Happy Halloween, a song by Junky featuring Kagamine Rin.
 * Happy Lucky Unholy Day Monday, a song by ERAN featuring Hatsune Miku.
 * Happy Magic Hour, a song by Inoppi featuring Aoki Lapis.
 * Happy Marriage Yellow, a song by Macguffin featuring Kagamine Rin and Len.
 * Happy Puppy Love, a song by SHINDEHAI featuring Hatsune Miku.
 * Happy Rainy Day, a song by Hachiouji-P featuring Hatsune Miku.
 * Happy Synthesizer, a song by Easy Pop featuring Megurine Luka and GUMI.
 * Happy Trap, a song by Junky featuring CUL.
 * Happyland, a song by J Sime featuring OLIVER.
 * HappySunday, a song by PressureRain.
 * HappyX2 Birthday, a song by GaGain featuring SeeU.