A couple of two month-long botanical expeditions conducted during 2014 and 2015 to inventory the moss flora of several mountain ranges in Mindanao, Philippines yielded 17 mosses reported new for the island, namely, Chaetomitrium elmeri, Chaetomitrium everettii, Clastobryum indicum, Ctenidium malacobolum, Distichophyllum subcuspidatum, Distichophyllum undulatum, Ectropothecium zollingeri, Fissidens anomalus, Fissidens pellucidus, Fissidens polypodioides, Fissidens taxifolius, Hookeriopsis wishurae, Meiothecium tenellum, Rhapidostichum luzonense, Rhodobryum aubertii, Rhynchostegiella menadensis and Rosulabryum billarderii. Southern range extensions for Mindanao are reported for Acroporium sigmatodontium and Pelekium velatum.