Josep Lluís Sert (1902 - 1983) was a Spanish architect. He was born in Barcelona with the complete name Josep Lluís Sert i López. As a child he showed already interest in the works of Gaudí and of his uncle, the painter Josep María Sert. He studied at the Barcelona School of Architecture.
While at Harvard, Sert established in 1955 an architectural agency together with some associates. They designed projects all over the country, including office, public, retail and residential buildings. In the neighbourhood of Harvard University Sert designed several projects, which are amongst his most famous, all of them reflecting the mediterranean character of his buildings.