Margaret Hamilton may refer to:

James Maury Henson (September 24, 1936 – May 16, 1990) was an American puppeteer, animator, cartoonist, actor, inventor, filmmaker, and screenwriter who achieved worldwide notice as the creator of The Muppets (1955–present) and Fraggle Rock (1983–1987); and as the director of The Dark Crystal (1982) and Labyrinth (1986). He was born in Greenville, Mississippi, and raised in Leland, Mississippi, and University Park, Maryland.

Samuel George Davis Jr. (December 8, 1925 – May 16, 1990) was an American singer, musician, dancer, actor, vaudevillian, comedian and activist known for his impressions of actors, musicians and other celebrities. At age three, Davis Jr. began his career in vaudeville with his father Sammy Davis Sr. and the Will Mastin Trio, which toured nationally. After military service, Davis Jr. returned to the trio and became an overnight sensation following a nightclub performance at Ciro's (in West Hollywood) after the 1951 Academy Awards. With the trio, he became a recording artist. In 1954, at the age of 29, he lost his left eye in a car accident. Several years later, he converted to Judaism, finding commonalities between the oppression experienced by African-American and Jewish communities.

Ronald James Padavona (July 10, 1942 – May 16, 2010) known professionally as Ronnie James Dio or simply Dio, was an American heavy metal singer-songwriter and composer, and was also known for popularizing the sign of the horns in heavy metal. He fronted or founded numerous groups throughout his career, including Elf, Rainbow, Black Sabbath, Dio, and Heaven & Hell.