From Old English Eatun (literally “homestead by a river or on an island”), from ea (“river”) + tun (“homestead”). As a surname, it is given to someone living near a river or on an island, or any of the various places in England called "Eaton".
- A village in Leicestershire.
- A village in Cheshire East, Cheshire.
- A village in Nottinghamshire.
- A village and former civil parish in Cheshire West and Chester, Cheshire.
- A village in Rushton, Cheshire West and Chester, Cheshire.
- A village in Norfolk, a suburb of Norwich, England.
- A hamlet in Oxfordshire.
- A suburb of Bunbury, Western Australia.
- A city in Ohio; named for William Eaton, a commander in the First Barbary War.
- A town in New York; named for William Eaton.
- A statutory town in Oklahoma.
- A town in Indiana.
- A town in Brown County, Wisconsin.
- A town in Manitowoc County, Wisconsin.
- A town in Clark County, Wisconsin.
- A town in New Hampshire; named for Theophilus Eaton, the first governor of New Haven Colony.
- A suburb of Darwin, Northern Territory; named for Charles Eaton, a RAAF officer.
- A English habitational surname.