GGA stands for:
- Göttingische scholars ads, existing since 1739 magazine
- The former Institute for Applied Geosciences, see Leibniz Institute for Applied Geophysics
- Great community antenna system, are often a technically advanced home antenna installations for hotels, high-rise buildings and roads. These devices were the forerunners of the later cable television.
PGI stands for:
- Protected geographical indication
Gga stands for:
- Good game all, see computer gaming jargon