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Pierre grew up in Orbec, Normandy, and Paris. His family moved between Paris and Orbec to accommodate Pierre's education and his mother's career. His artistic education began within his family; his parent's provided instruction in traditional techniques in drawing, painting, and sculpting. His grandfather, Gabriel, was a photographer in during World War I and his uncle Jean was also a photographer and artist. Pierre's father, Jacques, was a known textile expert and designer, and later a painter. His mother, Francoise Fontaine, was a professional musician and opera singer. From his uncle, Pierre received instruction in photography and film development.Toutain-Dorbec was influenced by his grandparent's neighbor, the French figurative painter Pierre Laffille (French, 1938–2012), who remained a life-time friend. At age 16, Toutain-Dorbec attended the Atelier de la Grande-Chaumiere, a renowned art school in Paris, where he received a classical education in fine art. While attending art school, Toutain-Dorbec supplemented his art education working as an assistant with the acclaimed German photographer Wilhem Maywald, who resided near the school.
By the end of 1968, with the encouragement of his family Toutain-Dorbec left home to pursue a career as a photographer. He began his career as photographer in Vietnam.From 1968 to 1995 Pierre worked as a war correspondent, for both Gamma and Sygma press agencies, and as a free lance photographer. His work focused mainly on Southeast Asia and North Africa. He covered his time in Vietnam and Cambodia with the Khmer Rouge (a collection of those photos are archived at the Rutgers University). While in Burma where he covered the problems of guerrillas fighting the government, like the Karen. Toutain-Dorbec worked to draw attention to the problems of child abuse and child prostitution  in Southeast Asia and problematic laws which could result in children being incarcerated alongside their fathers. Pierre paid special attention issues associated with illicit drugs, especially heroin. Toutain-Dorbec advocated the importance of fair judicial treatment for foreigner in the courts. Toutain-Dorbec worked for two years in Morocco from 1978 to 1979 for the King, photographing then-Crown Prince Sidi Mohammed and further documenting Morocco. King Hassan II has a large collection of his photographs. In India, he worked extensively on fiction regarding leprosy, religion and ancient cities. Pierre Toutain-Dorbec lived and worked with the Dalai Lama in 1983–84, co-authoring two books with him. He also photographed old French traditions going back as the middle age (some of the stories are now part of museum collections, like the Musee des Traditions in Louviers, Normandy). Pierre also worked for the movie industry.
From 1995 to 2003, Toutain-Dorbec lived in France and Spain where he pursued on personal projects, primarily sculpture and photography. In 2002, he became the director and curator of the International Museum for Photography, located in the ancient Chateau de Belcastel; Toutain-Dorbec has received claim for his work in this capacity. In 2004, he moved to New Mexico commencing a project documenting the United States.
Following his artistic urges from an early age, Pierre Toutain-Dorbec photographed and drew his family and his native countryside, Normandy. Throughout his career, Toutain-Dorbec's photographic work has remained true to his original training. His photographs are primarily black-and-white taken on traditional film. He maintains his own darkroom where he processes his film and silver gelatins himself. Toutain-Dorbec so far has published over forty books and exhibited his photographs, drawings, sculptures, and paintings throughout Asia, Europe, America, and North Africa.
- Tibet (photographs by Pierre Toutain-Dorbec, interview with Dalaï Lama, text by Pierre Joffroy).
- Tibet (photographs and text by Pierre Toutain-Dorbec, preface by Dalaï Lama). Editions Denoel, Paris, 1991. 119 p.; ISBN 2-207-23895-4.
- Rajasthan (photographs by Pierre Toutain-Dorbec). Harrap Columbus, London, 1988. 128 p.; ISBN 0-7471-0136-1.
- "Affronter le Passé : lhéritage du régime Khmer rouge". ka-set (in French). Archived from the original on 29 August 2011.
- "Photo exhibition shows aftermath of conflict".
- "Shuttered Lives: A Photographic Exhibit of the Pierre Toutain-Dorbec Collection".
- "Confronting the Past: The Aftermath of the Khmer Rouge Regime".
- "John Sevigny: Pierre Toutain-Dorbec's 'Confronting the Past - The Aftermath of the Khmer Rouge Regime'".
- "The Fourth North American Conference on the Family & Corrections" (in French and English).
- "Les quatres clefs du château" (in French).