Frank Alfred Marsales (31 August 1886 - 14 August 1975) was a Canadian composer best known for his work scoring many classic Warner Brothers cartoons in the 1930s.
Marsales was a symphony musician who became the music director for Warner Brothers Cartoons under the direction of former Disney animators Hugh Harman (1903–1982) and Rudolf Ising (1903–1992), scoring many classic cartoons in the 1930s, including every Harman & Ising Looney Tune and Merrie Melodie. His first credit was for "Sinkin' in the Bathtub", released May 1930 and animated by Isadore Freleng. He composed the music to the 1931 Merrie Melodie "Lady, Play Your Mandolin!". His last credit for Warner Brothers was in 1933 with "Bosko's Picture Show". He left Warner Brothers when Harman and Ising left the studio (but not with them), missing out on scoring their work at Paramount for the 1933 animated "Alice in Wonderland" — Marsales may also have had a hand injury at that time that precluded his composing any music at all.