Nelson Smock Riddle, Jr. (June 1, 1921 – October 6, 1985) was a well-known American bandleader, arranger and orchestrator whose career spanned from the late 1940s until the early 1980s. Riddle is perhaps best known for his 1950s work for Capitol Records, providing jazzy big-band style arrangements to accompany such vocalists as Frank Sinatra, Dean Martin, Nat King Cole, Judy Garland, Peggy Lee, Louis Prima and Keely Smith. Later, his arranging talents were also used by Ella Fitzgerald, Shirley Bassey, Matt Monro, Linda Ronstadt, and others.