Harry James Duynhoven is a New Zealand politician and member of the New Zealand Labour Party. He was the mayor of the city of New Plymouth and surrounding districts from 2010–2013. He was a Member of Parliament for the New Plymouth electorate from 1987–1990, from 1993–2003, and again from 2003–2008.

The 1987 New Zealand general election was a nationwide vote to determine the shape of the 42nd sitting of the New Zealand Parliament. The governing New Zealand Labour Party, led by Prime Minister David Lange, was re-elected for a second term, although the Opposition National Party made gains. The election also saw the elimination of the Democratic Party from Parliament, leaving Labour and National as the only parties represented.