Matthew David Duffie (born 16 August 1990) is a New Zealand professional rugby footballer who plays rugby union for the Blues in Super Rugby. He previously played rugby league with the Melbourne Storm in the National Rugby League and was a part of their under-20s Premiership winning team in 2009, scoring 25 tries. On 1 May 2011, he was selected for the New Zealand national rugby league team for the 2011 ANZAC Test. In October 2017, Duffie was named in the All Blacks for their end-of-year tour, becoming a dual-code rugby international.