Question: who sang the theme song to scooby doo
Answer: Nichols ( 1978 ) Voices of Don Messick Casey Kasem Frank Welker Nicole Jaffe ( 1969 -- 1970 ) Stefanianna Christopherson ( 1969 -- 1970 ) Heather North ( 1970 -- 1978 ) Pat Stevens ( 1978 ) Theme music composer David Mook Ben Raleigh Opening theme `` Scooby - Doo , Where Are You ! '' performed by Larry Marks ( 1969 -- 1970 , 1978 ) George A. Robertson , Jr. ( 1970 ) Composer ( s ) Ted Nichols ( 1969 -- 1970 ) Hoyt Curtin ( 1978 ) Country of origin United States Original language ( s ) English No.