Sofía von Ellrichshausen (born in 1976) is an Argentine-Chilean architect, artist, and educator. Together with Mauricio Pezo, in 2002 she founded Pezo von Ellrichshausen, an art and architecture studio in Concepción, Chile.

Their work has been exhibited at the Royal Academy of Arts in London, at the Venice Biennale International Architecture Exhibition, and is part of the permanent collections at the Art Institute of Chicago and the Museum of Modern Art in New York.

Von Ellrichshausen was born in Bariloche, Argentina in 1976. She holds a degree in architecture from the Universidad de Buenos Aires.^[2] She has taught at Cornell University in Ithaca, New York,^[2] Yale University in New Haven, Connecticut,^[3] the Illinois Institute of Technology College of Architecture in Chicago, IL,^[2] the University of Texas at Austin in Austin, Texas,^[4] and Tokyo University in Tokyo, Japan.^[3]

Sofia von Ellrichshausen met Mauricio Pezo in Buenos Aires, and established an art and architecture studio in Chile.^[5]

Cien House, which the studio built for themselves, is located in one of the suburbs of Concepción,^[6] and is presented as an example of Chilean Modernist architecture in a 2019 article in The New York Times.^[7] Poli House, designed in 2005 by von Ellrichshausen, was included in The Guardian's list of "The 10 best concrete buildings",^[8] and earned von Ellrichshausen the "Best Young Chilean Architect's Award".^[9] In 2009 The Architectural Review described their design for Casa Fosc as "playful".^[10] With Pezo, von Ellrichshausen was the curators of the Chilean Pavilion in the 2008 Venice Architecture Biennale,^[11] and she was a jury member at the 2018 Venice Biennale of Architecture.^[12]

The studio's portfolio also includes Solo House,^[2] Rode House,^[2] Luna House,^[13] Raem House, ^[13] the INES Innovation Center ^[13] to name a few.

Her work is part of the permanent collection at the MoMA in New York City,^[14] the Contemporary Art Museum in Santiago, Chile, ^[2] and the Art Institute of Chicago.^[15]

• Reporting from the Front, 2016 Venice Biennale of Architecture ^[2]
• Conceptions of Space, Museum of Modern Art, New York City (2014) ^[2]
• Sensing Spaces, Royal Academy of Arts, London (2014) ^[2]

• Naïve Intention. New York: Actar, 2018 ^[2]
• Av Monographs 199: Pezo von Ellrichshausen—Geometric Abstraction. Madrid: Avisa, 2018 ^[2]
• Pezo von Ellrichshausen—Spatial Structure. Copenhagen: Arkitektur B, 2016 ^[2]

The studio is a recipient of the Mies Crown Hall Americas Emerge Prize in 2014 for Poli House,^[16] the Rice Design Alliance Prize in 2012,^[17] and the Iberoamerican Architecture Biennial Award (2006),.^[9]