Lasith is a given name. Notable people with the name include:
Lasith Abeyratne (born 1993), Sri Lankan cricketer Lasith Croospulle (born 1998), Sri Lankan cricketer Lasith Embuldeniya (born 1996), Sri Lankan cricketer Lasith Fernando (born 1983), Sri Lankan cricketer Lasith Lakshan (born 1996), Sri Lankan cricketer Lasith Malinga (born 1983), Sri Lankan cricketer