Lenni may refer to:
Lenni, Pennsylvania, an unincorporated community in Middletown Township, Delaware County, Pennsylvania Lenni station, abandoned train station of Lenni Lenni Brenner (born 1937), American Marxist writer Lenni Jabour, Canadian singer-songwriter based in France Nanticoke Lenni-Lenape Tribal Nation, a state-recognized tribe in New Jersey Yang Jeongin, a member of the K-Pop group Stray Kids