Célestin Port (23 May 1828 – 4 March 1901) was a French archivist and historian.

Born in Paris to a modest family (his father ran an umbrella shop), he studied at the École des chartes, composed a thesis entitled Essai sur le commerce maritime de Narbonne [Essay on the maritime commerce of Narbonne] (submitted in 1852) and, in 1854, became archivist of the Department of Maine-et-Loire.

Spurred on by his teacher Jules Quicherat, he dedicated forty-seven years of his life to the history of Anjou, on which he published several important works.

His masterpiece — often plagiarised — is his "Dictionnaire historique, géographique et biographique de Maine-et-Loire" published in three volumes from 1874 to 1878.

[1] Célestin Port made no mystery of his militant republican sympathies, but he kept his distance from party politics.