Marian Andrzej Dudziak (born 2 February 1941) was a Polish sprinter who specialized in the 100 metres.
He was born in Wielichowo and represented the clubs Orkan Poznań and Olimpia Poznań. At the 1964 Summer Olympics he won a silver medal in the 4 x 100 metres relay with teammates Andrzej Zieliński, Wiesław Maniak and Marian Foik. He also competed in the 100 metres event, reaching the quarter-final. He achieved his personal best time in the 100 metres in the same year; 10.2 seconds with handtiming.[1]
He won an individual silver medal in 200 metres at the 1966 European Championships.[2] At the 1967 European Indoor Games he finished fifth in the 50 metres race.[3] He also competed in the relay final, but the team did not finish.[4] At the 1968 European Indoor Games he won a silver medal in the medley relay, which he ran with Edmund Borowski, Waldemar Korycki and Andrzej Badeński.[5] At the 1968 Summer Olympics he finished eighth in the 4 x 100 metres relay and reached the quarter-final in the 100 metres event.[1] At the 1971 European Championships he won a silver medal in the 4 x 100 metres relay together with Gerard Gramse, Tadeusz Cuch and Zenon Nowosz.[6]
He became Polish 100 metres champion in 1968 and 200 metres champion in 1966.[7]