- annihilation operator
- annihilation operators
- annihilation photon
- annihilation polynomial
- annihilation process
- annihilation radiation
- annihilator
- annihilator algebra
- annihilator; annulator
- annihilator condition
- annihilator ideal
- annihilator of a module
- annihilator of a subspace
- anning
- Anning Confucian Temple
- Anning He
- An Ning Ling
- Anning Qu
- Anning Shi
- Anning Wenquan
- Anniversary of the Victory of the Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War
- Ann J. Wolpert
- Ann-Marie MacDonald
- Annobón
- Anno Domini