To provide a support for the photographic printing paper prevented from the occurrence of the film cracks and dye lip streaks of water-resistant resin layers and superior in adhesion to the base and further superior in the sharpness of an image.

The support for the photographic printing paper has the water- resistant resin layers on both sides 2, 3 of the base 1 and one of the resin layers 2, 3 to be applied with an emulsion contains a titanium dioxide pigment, which consists of grains each having a surface treated with a silane coupling agent, and the surface of the grain is preferably treated with an inorganic surface treating agent and then treated with the silane coupling agent, which preferably adopts a silicone oligomer.