- Assumption of the Virgin
- assurance level
- assurance of paternity
- assurance services
- ASSURE model
- ASSURE模式
- assuring rate of depth datum
- Assyria
- Assyrian Relief
- Assyrians
- Assyriology
- AST
- AST3
- A stability
- A-stability
- A-stability; absolute stability
- A-stable
- astable
- Astana figurines from the tomb of Zhang Xiong in Tang Dynasty
- Astana Gumuqun
- Asta Nielsen
- A star
- A-star algorithm(heuristic optimal graph search algorithms)
- A Star Falling in Late Summer
- astatic