The species of four genera of Old World Araceae-Lasiinae are enumerated: Cyrtosperma (11, Malesia and Oceania), Lasia (2, Indomalesia), Podolasia (1, West Malesia), and Lasiomorpha (1, Tropical West Africa). Species of Cyrtosperma are illustrated. Distribution maps are provided. The new combination Urospatha wurdackii is made for the Venezuelan Cyrtosperma wurdackii Bunting. Dracontium spinosum is lectotypified.