Mateusz Rzeźniczak (born 23 July 1998) is a Polish sprinter specializing in the 400 metres.

He competed in the men's 4 × 400 metres relay at the 2020 Summer Olympics.

[1] Rzeźniczak represented Poland in the men's 4 × 400 metres relay at the 2020 Summer Olympics and finished in fifth place.

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