Mayo may refer to:
- Mayonnaise, often shortened to "mayo"
- Mayo Clinic, a medical center in Rochester, Minnesota, United States
Places
Antarctica
- Mayo Peak, Marie Byrd Land
Australia
- Division of Mayo, an Australian Electoral Division in South Australia
Canada
- Mayo, Quebec, a municipality
- Mayo, Yukon, a village
- Mayo (electoral district), Yukon, a former electoral district
Cape Verde
- Maio, Cape Verde (also formerly known as Mayo Island)
Côte d'Ivoire
- Mayo, Côte d'Ivoire, a town and commune
Ireland
- County Mayo
- Mayo (Dáil constituency)
- Mayo (Parliament of Ireland constituency)
- Mayo, County Mayo, a village
Thailand
- Mayo District, Pattani Province
United Kingdom
- Mayo, a townland in County Down, Northern Ireland
- Mayo (UK Parliament constituency), a former constituency encompassing the whole of County Mayo
United States
- Mayo, Florida, a town
- Mayo, Kentucky, an unincorporated community
- Mayo, Maryland, a census-designated place
- Mayo, South Carolina, a census-designated place
- Mayo Lake, North Carolina, a reservoir
Multiple places
- Mayo River (disambiguation), various rivers
Schools
- Mayo Clinic School of Medicine (formerly Mayo Medical School), an American medical school that is part of the Mayo Clinic and the Mayo Clinic College of Medicine and Science
- Mayo Clinic School of Health Sciences, a private, not-for-profit school run by the Mayo Clinic
- Mayo High School, a public high school in Rochester, Minnesota, United States
- Mayo College, a secondary educational institution in Ajmer, Rajasthan, India
People
- Mayo (surname)
- Mayo (given name)
- Mayo people, an indigenous ethnic group in the Mexican states of Sinaloa and Sonora
- Meo (ethnic group) or Mayo, an Indian ethnic tribe of Rajputs
Other uses
- Short Mayo Composite, a piggy-back long-range seaplane/flying boat combination built by Short Brothers in the late 1930s
- USS Mayo (DD-422), World War II US Navy destroyer
- Earl of Mayo, a title in the Peerage of Ireland
- Viscount Mayo, a title that has been created twice in the Peerage of Ireland
- Mayo GAA, an inter-county Gaelic Athletic Association team
- Mayo language, spoken by the Mayo people
- Mayo (TV series), a BBC television series first broadcast in 2006
- "Mayo" (song), by DJ Speedsta
- Mayo Hospital, in Lahore, Pakistan
- Mayo Hotel, Tulsa, Oklahoma, on the National Register of Historic Places
- Mexican American Youth Organization
- Project Mayo, an open source project by DivX, Inc.
- Mayo v. Prometheus, a U.S. Supreme Court case
- Avenida de Mayo, an avenue in Buenos Aires, Argentina