"
One of Us Must Know (Sooner or Later)" is a song written and recorded by
Bob Dylan. It is the fourth track on his 1966 album
Blonde on Blonde, and was released as the album's first single that February. The song is an emotional confession of misconnects and apologies from the singer to a woman who has tragically slipped out of his life. As a single, it peaked at #33 in the UK but only reached #119 on
Billboard's Bubbling Under charts.