Maumtrasna (alternative spelling Maamtrasna) is the highest peak in the Partry Mountains in south County Mayo, Ireland. The Srahnalong River runs southwest from the peak to the westernmost shore of Lough Mask. The townland of Maumtrasna is on the south bank of the Srahnalong. The townland was the location of the infamous Maumtrasna murders in 1882.