"Rainin' in My Heart" is a song written by James Moore (aka Slim Harpo) and Jerry West (an alias used by J. D. "Jay" Miller) and performed by Harpo. It reached number 17 on the U.S. R&B chart and number 34 on the U.S. pop chart in 1961. It was featured on his 1961 album Slim Harpo Sings "Raining in My Heart..." It is not to be confused with the similarly titled Buddy Holly song, "Raining in My Heart".