Introduction The fast Fourier transform (FFT) is a family of fundamental algorithms that is widely used in scientific computing and other areas [1]. kokkos-fft is designed to help Kokkos users who are: developing a Kokkos application which relies on FFT libraries. E.g., fluid simulation codes with periodic boundaries, plasma turbulence, etc. wishing to integrate in-situ signal and image processing with FFTs. E.g., spectral analyses, low pass filtering, etc. willing to use de facto standard FF...