Gregor Hradetzky (31 January 1909 – 29 December 1984) was an Austrian canoeist and organ builder who competed in the late 1930s.

He was born in Krems an der Donau and died in Bad Kleinkirchheim.

Hradetzky also won a bronze in the K-1 1000 m event at the 1938 ICF Canoe Sprint World Championships in Vaxholm representing Germany.

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