Noonday (spelled Noon Day on 1860s maps) was an unincorporated community located in far north-central Cobb County, Georgia, United States. It was centered at 34°03'43"N, 84°31'16"W (34.0620437, -84.5213204), along former Georgia highway 5, around the Noonday Baptist Church. This Baptist church is still active today.
- U.S. Geological Survey Geographic Names Information System: Noonday, Georgia
- Krakow, Kenneth K. (1975). Georgia Place-Names: Their History and Origins (PDF). Macon, GA: Winship Press. p. 160. ISBN 0-915430-00-2.