Dies is a surname, and may refer to:
Dies (mythology), the Roman counterpart of the Greek goddess Hemera, the personification of day, daughter of Nox (Night) and Erebus (Darkness).
Albert Christoph Dies (1755–1822), German painter, composer, and biographer
Josh Dies (b. 1983), American singer, songwriter, musician and author
Martin Dies, Jr. (1900–1972), Texas politician
Martin Dies, Sr. (1870–1922), Texas politician