Saisei (disambiguation)

Saisei may refer to:
*, a song by 1okushitaP featuring Hatsune Miku and IA.
*, a song by Akali featuring Hatsune Miku.
*, a song by HSM featuring Hatsune Miku.
*, a song by NioP featuring Hatsune Miku.
*, a song by Picon featuring Hatsune Miku.
*, a song by UtsuP featuring GUMI.