Milligan may refer to:
People Milligan (surname), a surname (including a list of people with the name)
Places Milligan, California, an abandoned settlement in San Bernardino County Milligan, Florida, an unincorporated community in Okaloosa County, Florida Milligan, Indiana, an unincorporated community Milligan, Nebraska, a village Milligan, Ohio, an unincorporated community Milligan, Texas, an unincorporated community in Collin County, Texas
Other uses Milligan College, a college near Greeneville, Tennessee Ex Parte Milligan, a United States Supreme Court case Miss Milligan, a solitaire card game