Eaton's / John Maryon Tower was a proposed supertall 140-storey office skyscraper, to be built in Toronto, Ontario, Canada. In 1971, Eaton's was going to team up with a developer named John Maryon to build a 1,650 ft (503 m) tower in the College Park area of Downtown Toronto. With a 600 ft (183 m) communication mast added to the roof of the triangular glass office tower, the total proposed height was 2,250 ft (686 m). Plans for the tower were cancelled, because building a structure of this height was considered impossible at the time of its planning. This skyscraper was planned two years before the Willis Tower was completed, and five years before the CN Tower was completed. Had the tower been built, it would have been the world's tallest building until 2008, when the Burj Khalifa surpassed its planned height.

The T. Eaton Co. Limited was once Canada's largest department store retailer. It was founded in 1869 in Toronto by Timothy Eaton, a Presbyterian Ulster Scot immigrant from what is now Northern Ireland. Eaton's grew to become a retail and social institution in Canada, with stores across the country, buying offices around the globe, and a catalogue that was found in the homes of most Canadians. A changing economic and retail environment in the late 20th century and mismanagement culminated in the chain's bankruptcy in 1999.

Eaton may refer to:

• Eaton Centre, the name of various shopping malls across Canada
• Toronto Eaton Centre, a large retail and office complex in Toronto, Ontario
• Eaton's / John Maryon Tower, a cancelled skyscraper in Toronto
• Eaton Center (Cleveland), an office tower in Ohio
• Eaton Hall, Cheshire, a country home in Eccleston, England
• Eaton Hall (King City), a conference centre in King City, Ontario
• The Carlu (Eaton Auditorium), an auditorium and national historic site in Toronto
• Timothy Eaton Memorial Church in Toronto
• Norwich Lt. Warren Eaton Airport, Norwich, New York, United States
• Chelsea Hotel, Toronto, which was known as the Eaton Chelsea from 2013 to 2015 and previously known as the Delta Chelsea.