Diane Arnold is a choreographer who choreographed the touring show The Muppet Show: On Tour (1984) and moved up to both director and choreographer for The Muppet Show on Tour: 2nd Edition (1985). She did the same for several Sesame Street Live shows, including Save Our Street (1985), Big Bird Goes Hollywood (1986), Big Bird and the ABCs (1987), Silly Dancing (1989), and Sleeping Birdie (1990). She later choreographed the Muppet special Mr. Willowby's Christmas Tree (1995).
Arnold was assistant choreographer to Anita Mann for the TV series Solid Gold. She also choreographed the Christmas special The Man in the Santa Claus Suit (with Fred Astaire). She had previously danced on and off-Broadway, including the 1967 revival of Guys and Dolls and the musical version of The Man Who Came to Dinner, Sherry! (with Clive Revill).