Hayden Roulston (born 10 January 1981) is a New Zealand former professional racing cyclist. He won the silver medal in the men's 4000 m individual pursuit and a bronze medal in the men's 4000 m team pursuit at the 2008 Summer Olympics in Beijing. He won the New Zealand road cycling championships on four occasions (2006, 2011, 2013, 2014), the Tour of Southland on three occasions (2006, 2007, 2008) and came tenth in the 2010 edition of Paris - Roubaix.