Marian Jerzy Woronin (born 13 August 1956 in Grodzisk Mazowiecki) is a retired Polish athlete who competed mainly in the 100 metres.

He competed for Poland in the 1980 Summer Olympics held in Moscow, Soviet Union in the 100 and 200 he reached both finals finishing seventh in both sprints.

In the 4×100 metres relay he won the silver medal with his teammates Krzysztof Zwoliński, Licznerski and Dunecki.

In 1981 he ran with the Polish/Europe sprint relay team that won the gold at the 1981 IAAF World Cup in Rome.

His fastest time for the 100 m was 10.00 seconds, recorded in 1984 in Warsaw with wind on the maximum allowable limit of 2.0 m/s.