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Lithia Springs () is an unincorporated community and census-designated place, formerly incorporated as a city, located in northeastern Douglas County, Georgia, United States. As of the 2020 census, the community had a population of 16,644. The area is named for its historic lithia mineral water springs.

Incorporated in 1882, Lithia Springs was dissolved the first time in 1933. Lithia Springs became incorporated again in 1994, to be Douglas County's second completely internal municipality, but disincorporated again in 2000.

In 2000, the citizens voted (80% yea, 20% nay) on December 20 to dissolve the city charter and de-incorporate the city, transferring all assets to the county. The referendum that ended the town was part of the settlement in a lawsuit brought by city residents charging the city should be dissolved because it did not deliver enough services to justify its existence under state law. During its incorporation until 2000, the former city had five mayors.

Lithia Springs is assigned the United States Postal Service ZIP code of 30122.