Morna Jessie Godwin Nielsen (born 24 February 1990) is a New Zealand former cricketer who played as a slow left-arm orthodox bowler. She appeared in 52 One Day Internationals and 44 Twenty20 Internationals for New Zealand between 2010 and 2016. On 10 November 2015, she got her first five-wicket haul at the Bert Sutcliffe Oval. She played domestic cricket for Northern Districts and Otago, as well as having stints with Durham, Melbourne Stars and Southern Vipers.