| Belief | |
| Type: | single |
| Artist: | John Mayer |
| Album: | Continuum |
| Released: |  September 2006 (Radio) January 2007 |
| Length: | 4:02 |
| Label: | Aware |
| Prev Title: | Waiting on the World to Change |
| Prev Year: | 2006 |
| Next Title: | Gravity |
| Next Year: | 2006 |
"Belief" was the second single from John Mayer's 2006 album Continuum. The song features Ben Harper on guitar.
Despite its success on the American adult album alternative chart and the South African Top 40, the song never had a music video. The song was nominated for the Grammy Award for Best Male Pop Vocal Performance for the 50th Annual Grammy Awards.