Mayo
Mayo often refers to:

Mayonnaise, often shortened to "mayo"
Mayo Clinic, a medical center in Rochester, Minnesota, United StatesMayo may also refer to:

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)

Republic of Ireland
County Mayo
Mayo (Dáil constituency)
County Mayo (Parliament of Ireland constituency)
County Mayo (UK Parliament constituency)
Mayo, County Mayo, a village

Ivory Coast
Mayo, Ivory Coast, a town and commune

Sudan
Mayo, Khartoum, a neighborhood

Thailand
Mayo district, Pattani

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 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
James Mayo, pen name of Stephen Coulter (born 1913/14), English author

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, a county board of the Gaelic Athletic Association
Mayo county football team
Mayo county hurling 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