After graduating from Harvard University in 1963 and MIT in 1966, Yann Weymouth served early in his career as Chief of Design for I.M. Pei on the National Gallery of Art East Wing, Washington, D.C and as the Chief of Design for I.M. Pei on the Grand Louvre Project, Paris, France.
In 1989, the year the Grand Louvre Pyramid opened, Engineering News-Record named Weymouth one of their “Men of the Year”. French President Francois Mitterrand honored Weymouth for his role, awarding him the “Chevalier” (Knight) of the “Ordre National du Mérite”. Weymouth was elevated to “Officier” (Officer) in 2012.
Weymouth then worked for Arup, SOM and Arquitectonica.
From early 2001 to 2013 Weymouth served as Senior Vice President, Design Director, and worldwide Design Board member for Hellmuth Obata + Kassabaum (HOK) Architects.
He designed The Phillip and Patricia Frost School of Experiential Music at the University of Miami (Coral Gables, Florida), intended to be the first LEED Platinum structures at the University.
He designed the Salvador Dali Museum in Florida.
He designed expansions, renovations and master plan of the John and Mable Ringling Museum of Art and Cultural Complex in Sarasota and the Museum of Fine Arts (St. Petersburg, Florida) Hazel Hough Wing.
Weymouth has kept notebooks of his work on the Louvre. In 1992, the American Institute of Architects and American Architectural Foundation exhibited Yann Weymouth Louvre Notebooks at The Octagon, Washington, D.C. In 2009, to mark the 20th anniversary of the opening of the Louvre Pyramid, the Musee du Louvre and Prestel co-published the book I.M. Pei and the Louvre Pyramid, by Philip Jodidio and with sketches by Weymouth.
He is the older brother of Tina Weymouth, the bassist for the art-rock band Talking Heads from 1974 to 1991, the son of Ralph Weymouth and the great-grandson of Anatole Le Braz.
On April 6, 2013 Wells married Rachel née Ludlow.
On January 4, 1988 Weymouth married his second wife Susana née Pola; they have a son.
Yann Weymouth was previously married to Lally Weymouth, a daughter of Katharine Graham, a former publisher of The Washington Post. They divorced in 1972, and had two children:Katharine Weymouth, former publisher for The Washington Post
Pamela Alma Weymouth, writer for HuffPost