Hernán Díaz Alonso (Buenos Aires, 1969) is an Argentine-American architect. He is Director/Chief Executive Officer of SCI-Arc in Los Angeles, and Founder and Principal of Los Angeles-based design practice HDA-X(formerly Xefirotarch). He is an Argentinian architect, designer, and educator widely credited for spearheading the transition of SCI-Arc to digital technologies, playing a key role in shaping the school's graduate curriculum in the past decade. As SCI-Arc director, he oversees the direction of an institution with more than 500 students and 80 faculty members, many of whom are well known in the fields of architecture and design. Along with his leadership at SCI-Arc, Díaz Alonso is principal of the Los Angeles-based firm HDA-X, known for producing grotesque and sometimes unsettling w