Casals () is a Catalan surname, the plural form of Casal (house). Notable persons with that surname include: Marta Casals Istomin (born 1936), wife of Pablo Casals and former president of Manhattan School of Music Pablo Casals (1876–1973), Catalan cellist and conductor Rosemary Casals (born 1948), American professional tennis player Stephen Casals, (born 1968), American artist Toni Casals Rueda (born 1980), Andorran ski mountaineer "Sammy Casals", a police detective in the film Heat portrayed by Wes Studi
See also Casal (disambiguation)