Jean Baptiste Joseph Fourier (1768-1830) masanin lissafin Faransa ne kuma masanin kimiyyar lissafi wanda aka fi sani da aikinsa akan nazarin lissafi na canja wurin zafi, wanda ya haifar da haɓaka jerin Fourier da Fourier transform. Ya kuma ba da gudummawa mai mahimmanci ga ka'idar jerin trigonometric da haɗuwarsu. Aikin Fourier ya aza harsashin fannin nazarin lissafi kuma yana da aikace-aikace iri-iri a fannin kimiyyar lissafi, injiniyanci, da sauran fannoni.