Charles Fourier (1772–1837), a French utopian socialist thinker

Discrete Fourier transform (DFT), occasionally called the finite Fourier transform, the Fourier transform of a discrete periodic sequence (yielding discrete periodic frequencies), which can also be thought of as the DTFT of a finite-length sequence evaluated at discrete frequencies

Joseph Fourier (1768–1830), a French mathematician and physicist

The Fourier transform, the type of linear canonical transform that is the generalization of the Fourier series

Fourier analysis, the analysis of a periodic function by decomposition into a Fourier series

Fast Fourier transform (FFT), a fast algorithm for computing a Discrete Fourier transform

The Fourier mode, a simple sinusoidal function such as <math>x = sin \theta</math>, in its role as a component of a Fourier series

The Fourier series, a series, a weighted sum of component normal Fourier modes, the result of Fourier analysis

Discrete-time Fourier transform (DTFT), the reverse of the Fourier series, a special case of the Z-transform around the unit circle in the complex plane

Short-time Fourier transform or short-term Fourier transform (STFT), a Fourier transform during a short term of time, used in the area of signal analysis

Fourier transform spectroscopy, a measurement technique whereby spectra are collected based on measurements of the temporal coherence of a radiative source, using time-domain measurements of the electromagnetic radiation or other type of radiation, including several methods such as the continuous wave Michelson or Fourier transform spectrometer and the pulsed Fourier transform spectrograph

List of Fourier-related transforms, a list of linear transformations of functions related to Fourier analysis

Fractional Fourier transform (FRFT), a linear transformation generalizing the Fourier transform, used in the area of harmonic analysis

Generalized Fourier series, generalizations of Fourier series that are special cases of decompositions over an orthonormal basis of an inner product space

Fourier inversion theorem, any one of several theorems by which Fourier inversion recovers a function from its Fourier transform

The Fourier operator, the kernel of the Fredholm integral of the first kind that defines the continuous Fourier transform

Peter Fourier (1565–1640), a French saint in the Roman Catholic Church and priest of Mattaincourt

The Fourier number (<math>\mathit{Fo}</math>) (also known as the Fourier modulus), a ratio <math>\alpha t/d^2</math> of the rate of heat conduction <math>\alpha t</math> to the rate of thermal energy storage <math>d^2</math>

Fourier (pronounced /ˈfʊərieɪ/, French pronunciation IPA: [fuʁie]) may refer to: