Mariusz Wieczorek
Mariusz Krzysztof Wieczorek is a Polish slalom canoeist who competed at the international level from 1992 to 2005.
He won a gold medal in the C1 team event at the 1999 ICF Canoe Slalom World Championships in La Seu d'Urgell. He also won an individual gold and a team bronze at the 2002 European Championships in Bratislava.
Wieczorek competed in two Summer Olympics, earning his best finish of 11th in the C1 event in Atlanta in 1996.
World Cup individual podiums
| Season | Date | Venue | Position | Event |
| 1999 | 24 Jun 1999 | Tacen | 2nd | C1 |
| 2001 | 27 May 2001 | Goumois | 2nd | C1 |
| 2001 | 5 Aug 2001 | Prague | 3rd | C1 |
| 2005 | 9 Jul 2005 | Athens | 1st | C1 |