Harold Allan Clarke (born 5 April 1942) is an English rock singer, who was one of the founding members and the original lead singer of the Hollies. He achieved international hit singles with the group and is credited as co-writer on several of their best-known songs, including “On a Carousel“, “Carrie Anne“, “Jennifer Eccles” and “Long Cool Woman in a Black Dress“. He retired from performing in 1999, but returned to the music industry in 2019. Clarke was inducted into the Rock and Roll Hall of Fame in 2010.

Harold Allan Clarke and his childhood friend Graham Nash began singing together in Manchester while still at school. They formed the Hollies in December 1962 with Vic Steele (lead guitar) and Eric Haydock (bass guitar). In April 1963, they added Tony Hicks (replacing Steele on lead guitar) and Bobby Elliott (replacing Don Rathbone on drums).