| Law | Field | Person(s) Named After |
|---|
| Abel's theorem | Calculus | Niels Henrik Abel |
| Ariadne's thread | Computer science | Ariadne |
| Amdahl's law | Computer science | Gene Amdahl |
| Ampère's circuital law | Physics | André-Marie Ampère |
| Archie's law | Geology | Gus Archie |
Archimedes's principle Axiom of Archimedes | Physics Analysis | Archimedes |
| Arrhenius equation | Chemical kinetics | Svante Arrhenius |
| Avogadro's law | Thermodynamics | Amedeo Avogadro |
| Basquin's Law of Fatigue | Materical science | O.
H. Basquin |
| Bell's theorem | Quantum mechanics | John Stewart Bell |
| Benford's law | Mathematics | Frank Benford |
| Beer–Lambert law | Optics | August Beer, Johann Heinrich Lambert |
Bernoulli's principle Bernoulli's equation | Physical sciences | Daniel Bernoulli |
| Biot–Savart law | Electromagnetics, fluid dynamics | Jean Baptiste Biot and Félix Savart |
| Birch's law | Geophysics | Francis Birch |
| Bogoliubov–Born–Green–Kirkwood–Yvon hierarchy |
|