Some possible funding opportunities (in no particular order)
Domestic undergraduate
Georgia Tech EAS Broadening Participation Summer REU
PURA (Georgia Tech only)
GSA Sectional Undergraduate Research Grants, ERG Program
Ford Foundation Predoctoral Fellowship
International undergraduate
DAAD (Germany)
Domestic graduate
NSF Graduate Research Fellowship Program
GSA Graduate Research Grants, GSA-ZEISS Research Grant, AGES Program
AEG, AAPG Grants-in-aid, SEG, SEPM
Ford Foundation Dissertation Fellowship
International graduate
Fulbright Foreign Student Program (many countries, including EU)
Swedish-American Foundation (Sweden)
American Australian Association (Australia)
Domestic postdoctoral
NSF Postdoctoral Fellowship
Ford Foundation Postdoctoral Fellowship
International postdoctoral
Feoder Lynen Fellowship (Germany)
American-Scandinavian Foundation (Scandinavia)
SNF Mobility Postdoc (Switzerland)
Säätiöiden post doc -pooli (Finland)
Fulbright Visiting Scholar Program (many countries including Israel, EU, Australia, UK)
Fulbright Nehru Postdoctoral Program (India)
Banting Postdoctoral Fellowship (Canada)
American Australian Association (Australia)
Schlumberger Foundation Faculty for the Future (many countries)
(and many other programs not listed here! please contact Karl Lang with suggestions)