Purple Mountain, Mountain summit in County Kerry, Ireland.

Purple Mountain (Irish: an Sliabh Corcra) is an 832-metre peak in County Kerry and the highest point of the Purple Mountain Group, which lies west of the Gap of Dunloe and is separated by it from MacGillycuddy's Reeks. The massif has five classified peaks, including Purple Mountain NE Top, Shehy Mountain, Tomies Mountain and Tomies North Top. Its eastern half falls within Killarney National Park, where oak forests cover the lower slopes.

Before the 19th century the massif was called Tomies, Tomish or Toomish; Charles Smith's 1756 survey applies the name to the whole group, and Patrick Weston Joyce derives Tomies from Irish Tuamaidhe, 'two burial cairns on the summit'. Samuel Lewis in 1837 wrote that Purple Mountain is 'so called from the colour of the shivered slate on its surface'. Paul Tempan concluded in 2010 that the English name was almost certainly coined in English, and the older name was then transferred to the lower Tomies Mountain (735 m).

Paul Tempan's 2010 Irish Hill and Mountain Names calls Purple Mountain "almost certainly a name coined in English"; Samuel Lewis in 1837 linked it to the colour of the shivered slate on its surface. Before the 19th century the massif was called Tomies, Tomish or Toomish, a name Charles Smith applied to the whole group in 1756. Patrick Weston Joyce derives Tomies from Tuamaidhe, two burial cairns on the summit; the older name now belongs to the lower Tomies Mountain at 735 metres.

Multiple hiking routes lead to the summit, including a roughly 14-kilometer loop starting at Kate Kearney's Cottage near the Gap of Dunloe. The terrain is demanding, so proper hiking boots and weather protection are essential for the climb.

The exposed rock surfaces are composed of Old Red Sandstone, creating violet-reddish hues that distinguish this peak across the landscape. This natural coloring is what gives the mountain its distinctive name.