Nikki Jayne Hamblin is a New Zealand middle distance runner who specialises in the 800 and 1500 metres. Born in England, Hamblin ran for the Dorchester Athletics Club before moving to New Zealand in 2006. She gained New Zealand citizenship in 2009. In 2010, Hamblin became the New Zealand record holder in the 1500 metres and won the silver medal in both the 800 and 1500 metres at the 2010 Commonwealth Games in Delhi.

The women's 5000 metres event at the 2016 Summer Olympics took place between 16–19 August at the Olympic Stadium.