Hoyt Curtin was an American composer and conductor, known for his work with Hanna-Barbera from 1957 until his retirement in 1986, he composed the theme songs to The Ruff & Reddy Show, The Flintstones, and The Jetsons.
Curtin died in 2000, at the age of 78.
- The New Scooby-Doo Movies - musical director (seasons 1 and 2)
- The Scooby-Doo Show - musical director (seasons 1, 2, 3)
- Laff-a-Lympics - musical director (seasons 1 and 2)
- The New Scooby and Scrappy Doo Show - musical director (season 1)
- The New Scooby-Doo Mysteries - musical director (season 1)
- The 13 Ghosts of Scooby-Doo - music composed and conducted by (season 1)
- Scooby Goes Hollywood - musical director