Ignasi de Solà-Morales Rubio (Barcelona 1942 – Amsterdam 2001) was a Catalan architect, historian and philosopher.

He has been professor of composition at the Barcelona School of Architecture, and has also taught at the universities of Princeton, Columbia, Turin, and Cambridge.

Among his most important architectural works we find the reconstruction of Ludwig Mies van der Rohe Barcelona Pavilion, and the reconstruction and expansion of the Liceu Theater in Barcelona.

Ignasi de Solà-Morales coined the term “terrain vague”, applied to abandoned, obsolete and unproductive areas, without clear boundaries.