|Full name||Marcin Krzysztof Koniusz|
|Born||12 September 1983|
|Height||1.85 m (6 ft 1 in)|
|Weight||85 kg (187 lb)|
|Club||AZS AWF Katowice|
|FIE ranking||current ranking|
Marcin Krzysztof Koniusz (born 12 September 1983 in Sosnowiec) is a Polish sabre fencer. He won a total of four medals, including a silver in the individual event, at the European Fencing Championships (2003 in Bourges, France, 2004 in Copenhagen, Denmark, and 2005 in Zalaegerszeg, Hungary).
Koniusz represented Poland at the 2008 Summer Olympics in Beijing, where he competed for the men's individual sabre. He defeated Venezuela's Carlos Bravo in the first preliminary round, before losing out his next match to German fencer Nicolas Limbach, with a final score of 7–15.
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