Joshua Duinker (/ˈdʌŋkər/ DUNK-ər; born 18 April 1989) is an Australian-Dutch former professional basketball player who last played for the Kumamoto Volters of the Japanese B.League .

[4] On 17 June 2014, Duinker signed a two-year deal with the Sydney Kings of the Australian National Basketball League.

[1] In May 2015, he declined to take up the second-year player option on his contract with the Sydney Kings, thus making him a free agent.

[6] After being tested by PBC Lukoil Academic in early September 2015,[7] Duinker later signed with Egis Körmend of the Hungarian League for the 2015–16 season.

On 8 March 2017, Duinker signed with the Wellington Saints for the 2017 New Zealand NBL season, returning to the country for a second stint.