The best known is Atlanta, Georgia, others include:

Incorporated cities: Atlanta, Michigan Atlanta, Wisconsin Atlanta, Louisiana Atlanta, Texas Atlanta, Kansas Atlanta, Missouri Atlanta, Indiana Atlanta, Illinois Atlanta, Nebraska Atlanta, Idaho Atlanta, New York       Atlanta, California

Other townships: Atlanta, Minnesota Atlanta, Montana* Atlanta, Mississippi Atlanta, Nevada Atlanta, Ohio Atlanta, Washington*     Atlanta, Kentucky Atlanta, Iowa Atlanta, Delaware Atlanta, Arkansas Atlanta, Colorado . (*historical)

Above information from the USGS GNIS.

and not to forget in Canada:

• Atlanta, Nova Scotia