Marcin Mielczarek (born 11 November 1982) is a paralympic athlete from Poland competing mainly in category T36 sprint and long jump events.

Mielczarek competed in all three sprint events in the 2004 Summer Paralympics winning the bronze medal in the T36 400m.

He also competed in the 100m and 200m at the 2008 Summer Paralympics in Beijing but missed out on a medal in both events.

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