Lygia Pimentel Lins (5 October 1920 – 25 April 1988), better known as Lygia Clark, was a Brazilian artist best known for her painting and installation work.
She was often associated with the Brazilian Constructivist movements of the mid-20th century and the Tropicalia movement.
Along with Brazilian artists Amilcar de Castro, Franz Weissmann, Lygia Pape and poet Ferreira Gullar, Clark co-founded the Neo-Concrete movement.
Throughout her career, Clark discovered ways for museum-goers (who would later be referred to as "participants") to interact with her art works.
She sought to redefine the relationship between art and society.