- attenuation measurement system based on audio substitution method
- attenuation of acousticwaves in the atmosphere
- attenuation of single mode fiber
- attenuation theory
- attenuator
- atterberg limits
- atterberg limits test of soil
- at the Du Fu Thatched
- At the End of the Golden Flower Season
- At the Height of Summer
- At the Turn of the 21th Century: Seminar on Review and Prospect of Taiwan and Mainland Operatic Research
- At This Crucial Juncture
- Attica
- Attic number system
- Attic signs
- Atticus
- Attila
- Attila József
- Attilio Bertolucci
- Attis Theater
- attitude
- attitude adjustment
- attitude and heading reference system
- attitude-behavior consistency
- attitude change