"Only One" is the third single from American band Yellowcard. This song is the third and last single from Ocean Avenue and the sixth track. Known for being another TRL hit, it is one of Yellowcard's lengthier tracks, partly due to its violin solo.

In interviews, Yellowcard has remarked that "Only One" was written and recorded in its entirety during recording sessions for Ocean Avenue.

"Only One" had to be shortened, from 4:17 to 3:55, for radio airplay purposes. The violin solo in the bridge had to be cut.

In this song Ryan Key plays bass. The video was the last to feature Ben Harper as the lead guitarist, and the first to feature Pete Mosely as the bassist.