Rudolf Katzer
Rudolf Katzer was a German track cycling racer who competed in the 1908 Summer Olympics.
With his teammates Karl Neumer, Max Götze, and Hermann Martens, he won the silver medal in the team pursuit. He also competed in the Cycling at the [1908 Summer Olympics – Men's 660 yards|660 yards sprint], in the Cycling at the [1908 Summer Olympics – Men's 5000 metres|5000 metres] race, and in the Cycling at the 1908 Summer [Olympics – Men's 20 kilometres|20 kilometres] race, but each time he was eliminated in the first round. He also participated in the 100 kilometres race but was not able to finish the race.