Oscar Gelbfuhs (November 9, 1852 in Šternberk, Moravia – September 27, 1877 in Cieszyn, Austrian Silesia) was a Moravian-Austrian chess master.
He took 11th in the Vienna 1873 chess tournament (Wilhelm Steinitz and Joseph Henry Blackburne won).
Gelbfuhs invented and proposed an auxiliary scoring method for tie breaking (Sonnenborn–Berger) there.
A simpler version the "Neustadtl Score" later became widely used.