Euclid is a city in Cuyahoga County, Ohio, United States. It is part of the Greater Cleveland Metropolitan Area, and borders Cleveland. As of the 2010 census, the city had a total population of 48,920. In 2009, Euclid celebrated its bicentennial.
The city was named after Euclid, the Greek mathematician.
Euclid is located at 41°35′44″N 81°31′9″W / 41.59556°N 81.51917°W / 41.59556; -81.51917 (41.595563, -81.519176).