Aristeidis Grigoriadis
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Aristeidis (Aris) Grigoriadis (born December 6, 1985) is a Greek swimmer from Thessaloniki. He became the first - and only one so far - Greek swimmer to be crowned World Champion in the 50m backstroke event of the 2005 World Championships in Montreal. At the European Championships of Eindhoven in 2008 he won two medals.The gold in 50 m backstroke and the silver in 100 m backstroke.

