Patrick Demarchelier is a French fashion photographer. He was born in Le Havre, France in 1943 to a modest family. His father left the family when Patrick was eight to tour with the traveling cinema he owns.
For his seventeenth birthday, his stepfather bought him his first Eastman Kodak camera. Demarchelier took his first full-time photographic job at a small lab in Le Havre, where he learned how to develop film and retouch negatives.
In 1963, Patrick moved to Paris, where he first worked in a darkroom, then became an assistant to a photographer for Cinémonde. Six months later, he started to take test shots of models at Paris Planning modeling agency.
In 1964, he became assistant to photographer Hans Feurer at Nova magazine and soon became established in his own right.
In 1975, he left Paris for New York to follow his girlfriend. He discovered fashion photography by working as a freelance photographer and learning and working with photographers such as Henri Cartier-Bresson, Terry King, and Jacque Guilbert. His work drew the attention of Elle, Marie Claire and 20 Ans Magazine
He later worked for Vogue and Harper's Bazaar, first in September 1992 which resulted in a 12-year collaboration.
Demarchelier has shot international advertising campaigns for Dior, Louis Vuitton, Celine, TAG Heuer, Chanel, Yves Saint Laurent, Lacoste, Calvin Klein and Ralph Lauren.