LGA
LGA is an abbreviation for:
- LaGuardia Airport , the smallest commercial airport in the American city of New York, USA according to the IATA code
- Land Grid Array , interconnection system for processors and other integrated circuits
- State Health Office , see Public Health Service
- Landesgewerbeanstalt Bayern , a corporation under public law, based in Nuremberg
- Leading clerical office , former collective bishops committee of the Evangelical Church in Hesse and Nassau
- Local Government Area , administrative unit in Australia, Gambia and Nigeria
- Last common ancestor , see Most recent common ancestor