Dr. Joel FeinsteinMOBARAK SALEH ALI ALKORBI2022-05-292022-05-29https://drepo.sdl.edu.sa/handle/20.500.14154/44236This report discusses the Fourier analysis on groups. The focus of this report is to demonstrate the Haar measure and prove its uniqueness, after a brief study on topological groups. this report ends by discussing Fourier inversion formula, Fourier inversion and Plancherel theorem.en