- Wallis formula
- Wallis test for fourth-order autocorrelation
- Wallman compactification
- Wall theorem
- Walras equilibrium
- Walras law
- Walsh approximation
- Walsh function
- Walsh orthogonal system
- Walsh polynomial
- wandering component
- wandering point
- wandering point
- Wang Peizhuang's program to lay a foundation on fuzzy mathematics
- waning moments
- Ward integral
- Ward lower function
- Ward upper function
- Waring problem
- Waring's problem
- Warming-Kutler-Lomax method
- warped surface
- watt
- wave
- wave equation