"Blue Zone" is a song recorded by Japanese singer Shizuka Kudo for her fourteenth studio album, Full of Love.

[1] A song titled "I.n.g" was originally slated to be released in place of "Blue Zone".

Since it does not appear on Full of Love, it is unclear whether the song was scrapped or if "I.n.g" was simply an alternate title.

The song was written by Shizuka Kudo, under the pseudonym Aeri, and composed by Takashi Tsushimi.

Kumi Koda performed "Blue Zone" when auditioning for the second generation of Morning Musume., broadcast on the TX talent search show Asayan.