Lily Sinei Mulivai (born 3 August 1990) is a New Zealand-Samoan cricketer who plays for Northern Districts and Samoa.
Mulivai was born in Auckland and is the younger sister of Samoan cricketer Faasao Mulivai.
Mulivai was part of the Samoa one day international squad for the 2010 series against Fiji. She won gold with the women's team at the 2015 and 2019 Pacific Games.