Luís Antoni Santaló Sors (October 9, 1911 – November 22, 2001) was a Spanish mathematician.
He graduated from the University of Madrid and he studied at the University of Hamburg, where he received his Ph.D.
His advisor was Wilhelm Blaschke.
Because of the Spanish Civil War, he moved to Argentina as a professor in the National University of the Littoral, National University of La Plata and University of Buenos Aires.
His work with Blaschke on convex sets is now cited in its connection with Mahler volume.
Blaschke and Santaló also collaborated on integral geometry.
Santaló wrote textbooks in Spanish on non-Euclidean geometry, projective geometry, and tensors.