"Believe in Love" is a song by Japanese dance music project Ravex, featuring South Korean singer BoA.

Ravex was a three-person unit, consisting of dance musicians Shinichi Osawa, Tomoyuki Tanaka (otherwise known as Fantastic Plastic Machine) and Taku Takahashi of M-Flo, to celebrate the 20th anniversary of the Avex Group record label.

The single features three songs: the B-side is a collaboration with Maki Goto, her first release under the Avex Trax label after parting with Hello!

[2] This version was found on her "Eien / Universe / Believe in Love", and was added to her Best & USA compilation album a month later.

[1] For BoA's acoustic version, they noted that Sasagao's guitar accompaniment made the song into a "shining bossa-style ballad".