Cor Ruys (1889-1952) was a Dutch actor, stage director, comedian and cabaret artist. Though mainly active in theatre, Ruys occasionally starred in films as well.

In 1905, Ruys started his acting career at the Nederlandsche Tooneelvereeniging of Adriaan van der Horst; initially as a volunteer, but after only three months he got a permanent commitment. It was here that he achieved his first success with an improvised imitation of the then popular operetta star August Kiehl. His stage career took off soon after and he achieved successes working with acclaimed stage directors such as Gustave Prot, Eduard Verkade and Nap de la Mar.