Lalang may refer to:
Operation Lalang, Malaysian police action Imperata cylindrica, a species of grass called lalang in the Malay language Boaz Kiplagat Lalang (born 1989), Kenyan runner Lawi Lalang (born 1991), Kenyan runner Lalang, Iran, a village in Golestan Province, Iran Lalang (island), an island in the Federated States of Micronesia