Vailimia is a spider genus of the Salticidae family (jumping spiders). Its only species occurs only in Borneo. The species was originally described from a single male in 1907, which is about six millimeters long, and said to be close to Harmochirus. However, the male pedipalp, chelicera and cephalothorax drawn by Proszynski (1984), and recently collected specimens indicate otherwise.