Mark Clifford Mueller is an American songwriter, lyricist, writer, and television producer whose career spans pop music, rock, R&B, television, film, and stage. A two-time winner of the ASCAP Pop Award for writing one of the Most Performed Songs of the year, has had three Billboard Hot 100 Top Ten singles and one #1 Adult Contemporary hit.

For Disney, he wrote and composed the words and music of both the "DuckTales Theme" song in the 1987 animated TV series DuckTales, and the "Rescue Rangers Theme" song in the animated TV series Chip 'n Dale Rescue Rangers. His "DuckTales Theme" song has been updated for the 2017 DuckTales reboot.

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