Carlos Sebastián Pedro Hubert de Haes (January 25, 1829 – June 17, 1898) was a Spanish painter from Belgium. He was noted for the Realism in his landscapes, and was considered to be the "first contemporary Spanish artist able to capture something of a particularly Spanish 'essence' in his work". He was cited along with Jenaro Perez Villaamil and Aureliano de Beruete as one of the three Spanish grand masters of landscape painting, the latter of which was his pupil.