Didier Rykner is a French journalist and art historian. He regularly publishes his investigations and analyses on the website La Tribune de l'art.

He publishes La Disappearance de Paris, published by Les Belles Lettres. He supports the petition Save the squares of Notre-Dame! It has been created to oppose the mayor's project to renovate the gardens of the cathedral. The director of Laribune de l’art opposes this and supports the campaign to save the squares.