Sidney is a city located in Shelby County, Ohio, in the United States. It serves as the county seat and is situated within the Dayton metropolitan area. Geographically, the city is positioned approximately 36 miles north of Dayton and 100 miles south of Toledo.
The city was named in honor of the English poet Philip Sidney. Its local elementary schools feature names inspired by famous writers, such as Ralph Waldo Emerson, Henry Wadsworth Longfellow, and John Greenleaf Whittier. In addition to its historical namesake, Sidney received the All-America City Award in 1964 and was featured in the 2009 documentary film 45365.