I don't know Atlanta but here's what I was able to find:
http://www.chienhong.com/- Hung Fist(?) (possibly Hung Gar)
--Taiwanese Hung Kuen -- East Atlanta
http://www.eagleclawatl.com/- Eagle Claw
-- Ying Jow Pai from Leung Shum lineage -- Warehouse District near Ga Tech in Atlanta
http://www.shanshuikf.com/-
Hung Gar -- WFH lineage in Gwinnett County
http://www.francisfongacademy.com/- Wing Chun/JKD/Muay Thai/BJJ/Kali-Escrima
-- Francis Fong... nuff said. Norcross.
http://www.lywc.com/- Wing Chun
-- Jason Lau's senior student -- Woodstock area
http://www.pathsatlanta.org/- Bagua/Xingyi/Hunyuan (Chen) Taiji/Northern Shaolin
-- Good guys & all know their stuff. BBQ'd with them a couple of weeks ago -- Decatur --
Chen is in Athens, not Atlanta.
http://www.jasonlau-wingchun.com/- Wing Chun
-- Francis Fong's elder WC brother. -- Smyrna
http://www.shaolin-world.net/- Shaolin/Yang & Chen Taiji/Sanshou
-- Songshan Shaolin under Shawn Liu. Norcross/Berkeley Lakes area of Gwinnett
http://www.myjhonglawhorn.com/Lost_Track_Kung_Fu.html- My Jong Law Horn/Wu Taiji
-- Don't know him. Decatur.
http://www.iaw-atlanta.com/- Wing Chun
-- Kurk Johnson. Nice guy & seems to have good hands from what I've observed. -- Marietta/East Cobb
http://www.olivieresmartialarts.com/- Long Hu Pai
--Don't know him. South of ATL
http://www.apittman.com/ptt/east/east.shtml- Xingyi/Bagua/Yang Taiji --
see Paths Atlanta.
http://www.youtube.com/profile?user=brucereiter- I know this guy teaches in the Atlanta area, I believe Yang Taiji and Gao Bagua, possibly more. This is the only contact I have, you'd need to message him on youtube if interested.
--Bruce studies with the Paths guys when he has time. I need to call him for dinner.
http://www.taichiatlanta.com/- Hunyuan Taiji (branch off Chen)
-- Don't know this guy. Website says Kennesaw State Univeristy for a location -- North Cobb
http://www.mz108.com/- Mei Zhong Yang Taiji
-- Don't know her, but have seen her. -- Decatur
http://www.taichichuanatlanta.com/- Yang Taiji
-- Don't know them. -- Doraville.
http://www.ckfaatlanta.com/- Southern Mantis --
Have seen them fight at Shawn Liu's 2001 tournie. Good stuff. Hard to get ahold of. Poncey-Highlands area of Atlanta.
http://www.clffb.com/- Choy Lee Fut
-- Chan Family CLF from Chen Yong Fa's line -- Flowery Branch. North Gwinnett County
That should get you started. I can't vouch for the quality of any of these schools first hand, so go and check them out carefully.