- AGAA stands for Alte Gaussianer auf Abwegen
- AGAA stands for Academie Genevoise d’Armes Anciennes (Geneva, Switzerland)
- AGAA stands for Attitude Gyro Accelerometer Assembly
- AGAA stands for Algebraic Geometry, Algebra, and Applications
- AGAA stands for Amateur Golf Association of America, Inc. (est. 1993; Atlanta, GA)
- AGAA stands for Airman Apprentice, Aerographer’s Mate Striker (Naval rating)
AGAA