Manuel Graça Dias was a prominent Portuguese architect, professor, and writer, recognized for his influential contributions to contemporary Portuguese architecture. Born in Lisbon, Graça Dias studied architecture at the Escola Superior de Belas-Artes de Lisboa and later became a respected educator at various institutions, including the University of Porto and the Universidade Autónoma de Lisboa.

In partnership with Egas José Vieira, he co-founded the architecture firm Contemporânea, where they designed many notable projects characterized by a bold, modern style that merged functionality with creative expression. Some of their iconic works include the Teatro Municipal de Almada and the Pavilion of Knowledge (Pavilhão do Conhecimento) in Lisbon, both of which reflect his innovative approach to public spaces.

Graça Dias was also a prolific writer and commentator on architecture, contributing columns, articles, and television programs that made architectural ideas accessible to the public. His work earned him awards and recognition as a leading voice in Portuguese architecture, and he is remembered for his impact on the architectural landscape and education in Portugal.