We provide a preliminary account of the bat ectoparasite fauna of Siargao Island, Philippines. Three bat fly species are recorded in this study, representing the genera Brachytarsina Macquart, Eucampsipoda Kolenati, and Megastrebla Maa. There was no published work on Siargao Island bat flies before this study. Thus, this report represents the first published documentation of bat flies in Siargao Island, Philippines.