| Klaus Porbadnik | |
| Nationality: | German |
| Sport: | Long-distance running |
| Event: | Marathon |
| Birth Date: | 24 June 1930 |
| Birth Place: | Hohenstein, East Prussia, Weimar Germany (Olsztynek, Poland) |
Klaus Porbadnik (born 24 June 1930) is a German long-distance runner. He competed in the marathon at the 1956 Summer Olympics.[1]