SANAA (Sejima and Nishizawa and Associates) is an architectural firm based in Tokyo, Japan. It was founded in 1995 by architects Kazuyo Sejima (1956–) and Ryue Nishizawa (1966–),
who were awarded the Pritzker Prize in 2010. Notable works include the Toledo Museum of Art's Glass Pavilion in Toledo, Ohio; the New Museum of Contemporary Art in New York; the Rolex Learning Center at the EPFL in Lausanne; the Serpentine Pavilion in London; the Christian Dior Building in Omotesandō, Tokyo; the 21st Century Museum of Contemporary Art in Kanazawa;the Louvre-Lens Museum in France; and the Bocconi New Campus in Milan.
Kazuyo Sejima and Ryue Nishizawa founded SANAA in 1995. They later won the Golden Lion in 2004 for the most significant work in the Ninth International Architecture Exhibition of the Venice Biennale. In 2010, they were awarded the Pritzker Prize, which made Sejima the second woman to win this prize.