Eastman is a city in Dodge County, Georgia, United States. The population was 5,658 at the 2020 census, up from 4,962 at the 2010 census. The city was named after William Pitt Eastman, a native of Massachusetts who purchased a large tract of land along the Macon and Brunswick Railroad, and settled a city on the site. In the 19th century, this was a center of the timber and sawmill industry.