Buxton Popoali'i (born 4 December 1989) is a former New Zealand rugby union player who played club rugby for Dunedin side Green Island, provincial Mitre 10 Cup rugby for Wellington between 2008 and 2010 and for Otago between 2011 and 2013. He also made 15 appearances for the Highlanders in 2012 and 2013. He usually played as a winger or fullback. He retired from professional rugby in 2014, aged 24, due to a heart condition.