Jos Stam (born 28 December 1965 in The Hague, Netherlands) is a researcher in the field of computer graphics, focusing on the simulation of natural physical phenomena for 3D-computer animation. He achieved technical breakthroughs with the simulation of fluids and gases,[1] new rendering algorithms and subdivision surfaces,[2] which are a mix between two previously incompatible worlds of Nurbs- and polygon-modeling in 3D.