William Rosenberg (1916–2002) was an American entrepreneur who founded Dunkin' Donuts.
William Rosenberg may also refer to:
Wilhelm Rosenberg (1850–1930s), known as William, German-American teacher, poet, playwright, journalist, and socialist political activist William Rosenberg (actor) (1920–2014), Danish actor S. William Rosenberg (1916–1990), American politician in New York William Frederick Henry Rosenberg (1868–1957), English naturalist and natural history dealer
See also William of Rosenberg (1535–1592), Bohemian nobleman