Caffeine (disambiguation)

Caffeine may refer to:
*CAFFEIN, an illustrator.
*, a song by Dasu featuring GUMI and Kagamine Len.
*, a song by DQ featuring GUMI. 
*, a song by george featuring Utatane Piko.
*, a song by Hiiragi Magnetite featuring KAFU.
*, a song by Shaberu Boushi featuring Hatsune Miku.
*, a song by Compass Cat featuring SeeU.