Duško Mrduljaš (born 17 July 1951) is a former professional rower who won a bronze medal in the coxed pair at the 1980 Summer Olympics.

Working career began in the commercial enterprise "Dalma" in 1979 in Split on business planning and analysis.

In between 2001 and 2002 he was the CEO of the biggest Croatian nautical company ACI from Opatija and was a member of the working group of the Government Office for the development of the strategy of tourism of the Republic of Croatia (2002 - 2003).

His grandfather was a state representative in rowing, father and uncle champions of Europe in eights (1932) and the son Jure Mrduljaš of silver in the overall World Cup in coxless four.

He also won the bronze medal in the coxless pair at the World Junior Championships in Naples in 1969.

As a member of the Assembly in the same period he was elected three times to the Council of the Croatian Olympic Committee (2000-2002 ; 2004-2008) .