99X was a radio station in Atlanta, Georgia, USA, streaming an alternative rock radio format branded as 99X, which began on full-power station WNNX (now WWWQ) FM 99.7 in late October 1992. The station was taken off-air when Q100 (WWWQ) was moved to 99.7 from 100.5 (now WNNX), but returned to W250BC FM 97.9, and then moved to W256BO FM 99.1 (which is now W255CJ FM 98.9).