Piotr Markiewicz (born 23 September 1973 in Sejny, Podlaskie) is a Polish sprint canoeist who competed from the early 1990s to the early 2000s (decade).

At the 1996 Summer Olympics in Atlanta, he won the bronze medal in the K-1 500 m event.

Known for his devastating sprint finish, Markiewicz won his first national champion 1993.

For his sport achievements, he received: Silver Cross of Merit in 1996.

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