Dieter Semetzky (born 3 November 1949) is a German rower who competed for East Germany in the 1968 Summer Olympics.

Olympic medal record
Men's rowing
Silver medal – second place 1968 Mexico City Coxed four

He was born in Dresden.

In 1968 he was the coxswain of the East German boat which won the silver medal in the coxed fours event.

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