Lucy Oliver (née van Dalen; born 18 November 1988 in Wanganui) is a New Zealand middle-distance runner, who competed at the 2012 Summer Olympics, in the Women's 1500 metres. Along with her twin sister Holly, Lucy attended Stony Brook University in New York until 2012, earning an undergraduate degree in sociology followed by a Master of Arts in Liberal Studies (MA/LS). She was chosen an NCAA All-American for outdoor track (2010, 2011 and 2012), indoor track (2011 and 2012) and cross-country (2011). She competed in the 3000 m at the 2014 World Indoor Championships. At the 2014 Commonwealth Games, she competed in the 1500 m and the 5000 m.