Johannes "Johan" Ollus (January 8, 1886 - December 26, 1939) was a Finnish hockey player. He initially played bandy hockey in Finland with Polyteknikernas IF from 1907 to 1909. Ollus moved to Berlin to study in 1910 and soon joined the Berliner Schlittschuhclub ice hockey club. He quickly became one of the top players in Europe and was a member of the German National Team at the LIHG Championships in 1912, 1913, and 1914. He was inducted into the German Ice Hockey Hall of Fame in 1988.