Mariusz Krzysztof Siudek (Polish pronunciation: ['marju? '?ud?k]; born 29 April 1972 in Oswiecim) is a retired Polish pair skater who competed with wife Dorota Siudek (Zagórska).
They are the 1999 World bronze medalists, two-time (1999, 2000) European silver medalists and two-time (2004, 2007) European bronze medalists.
They were the first Polish pair to win a medal at the World Championships.