Sei (disambiguation)

Sei may refer to:
*, a song by Akali featuring Hatsune Miku.
*, a song by DELA featuring GUMI.
*, a song by hyton featuring Inane Inane Inaine Inane Naine.
*, a song by Inuyama featuring Kagamine Rin.
*, a song by Niisan featuring Hatsune Miku.
*, a song by ushiee featuring Kasane Teto.