Lena Metlege Diab (born 1965) is a Canadian politician, who was elected to the Nova Scotia House of Assembly in the 2013 provincial election. A member of the Nova Scotia Liberal Party, she represented the electoral district of Halifax Armdale until 2021. She did not run for another term in the provincial legislature in the 2021 Nova Scotia general election, opting instead to run as the Liberal Party of Canada candidate for the riding of Halifax West in the 2021 Canadian federal election.