8 may refer to:
- "8", a song by Noak featuring Hatsune Miku.
- "8", a song by keeno featuring Hatsune Miku.
- "8", a song by Rockflos featuring Maowei Jiajia.
- "8:00 p.m.", a song by Sola Kurage featuring Hatsune Miku.
- "8AM", a song by Pumpkin Head featuring multiple Vocaloids.
- "8 Seconds" (8秒 (8-byou)), a song by AVTechNO featuring Hatsune Miku.
- "「8th」", a song by INahual featuring Hatsune Miku.
- -8, a Vocaloid song producer.
- "∞8", a song by YonabeP featuring GUMI.
- Eight, a Vocaloid song producer.