Who has voiced Fred Jones in the most Scooby-Doo productions?

Frank Welker has voiced Fred Jones in the most Scooby-Doo productions.

Welker began voicing Fred in the original 1969 series, Scooby-Doo, Where Are You! He continued performing the character across later television series, animated films, and specials, making Fred one of his longest-running voice roles.

His Scooby-Doo work is especially notable because he also became the voice of Scooby-Doo in later productions. Welker first played Fred while still a young actor and eventually became the franchise’s principal voice performer for both the human leader and the dog.

The answer is sometimes confused with the actors who voiced Scooby or Shaggy. Casey Kasem was strongly associated with Shaggy, while Don Messick originated Scooby’s voice. Welker’s role is specifically Fred Jones.