A new, lowland species of the Ingerophrynus biporcatus group is described from the Endau-Rompin National Park in southern, peninsular Malaysia, Johor. It is unique in various aspects of morphology and color and is the third, new herpetological species discovered and described from this region of the Malay Peninsula since 2005. This suggests that the biodiversity of this part of southern Malaysia may be significantly underestimated and underscores the importance of continued field research in these lowland forests which are currently being logged and converted to oil palm plantations.