- Ward lower function
- Ward upper function
- Waring problem
- Waring's problem
- Warming-Kutler-Lomax method
- warped surface
- watt
- wave
- wave equation
- wavefront sets
- wave function
- wavelength assignment
- wavelength division multiplexing all-optical network
- wavelength division multiplexing technique
- wavelength routing
- wavelet analysis
- wavelet frame
- wavelet function
- wavelet function in orthonormal multiresolution analysis
- wavelet matrix
- wavelet packets
- wavelet sequence
- wave mechanics
- way-below relation
- W-block data of triangulation