- Altay Mountains Rock Art
- Altay orogenic belt
- Altay Shanmai
- Altay sheep
- Altay Shi
- Altayskiy Kray
- Altay， Respublika
- altazimuth
- altazimuth mounting
- altazimuth reflector
- altazimuth telescope
- Alte Pinakothek
- alter
- alteration
- alteration and extension technology
- alteration decision of administrative litigation
- alteration of an algebraic variety
- alteration of high-level waste glass
- alteration of jade artifact and jade material
- alteration of negotiable instrument
- alteration of vitrified high-level waste
- alteration remote sensing anomaly
- alterative inflammation
- altered chord
- altered colour