| Ocean | |
| Cover: | B'z_O.jpg |
| Type: | single |
| Artist: | B'z |
| Album: | Monster |
| Released: | August 10, 2005 |
| Genre: | Hard rock |
| Length: | 12:52 |
| Label: | Vermillion Records |
| Producer: | Tak Matsumoto |
| Prev Title: | Ai no Bakudan |
| Prev Year: | 2005 |
| Next Title: | Shōdō |
| Next Year: | 2006 |
"Ocean" is the thirty-ninth single by B'z, released on August 10, 2005. This song is one of the duo's many number-one singles in the Oricon charts, and has sold over 505,000 copies. As B-sides, the single features "Dear My Lovely Pain" and "Narifuri Kamawazu Dakishimete", which is an outtake from The Circle. "Ocean" was used as the theme of Umizaru Evolution, a Japanese television drama adaptation of the manga Umizaru.
The song has received three certifications from the RIAJ: a double platinum shipping certification, a double platinum ringtone download certification and a gold full-length cellphone download certification.[1] [2]