"I Guess I'll Always Love You" is a 1966 single by The Isley Brothers, released on Motown's Tamla label, and is a Holland–Dozier–Holland composition. In the US, the single made both the Hot 100, and R&B singles chart. The Isleys' version went to number 45 in the United Kingdom, when originally released in September 1966 (TMG 572) and was then reissued again in [[1969 in music|1969] under TMG 683] peaking at number 11, a much bigger hit than it ever was in the United States.