The Iveragh Peninsula (Irish: Uíbh Ráthach) is located in County Kerry in Ireland. It is the largest peninsula in southwestern Ireland. A mountain range, the MacGillycuddy's Reeks, lies in the centre of the peninsula. Carrauntoohil, its highest mountain, is also the highest peak in Ireland.

Towns on the peninsula include Killorglin, Cahersiveen, Ballinskelligs, Portmagee, Knightstown, Waterville, Caherdaniel, Sneem and Kenmare.

The Ring of Kerry, a popular tourist trail, circles the coastlines as well as the Skellig Ring, beginning and ending at Killarney, just east of the peninsula.

Valentia Island lies off the northwestern tip of the peninsula. It is connected with the peninsula by a bridge at Portmagee village, but it can also be reached by ferry crossing between Renard Point on the mainland and Knightstown on the island.

The Skellig Islands lie about 12 kilometres (7.5 statute miles or 6.4 nautical miles) off the west coast and are known for their monastic buildings and bird life. Since 2015, the filming of Star Wars has brought many new tourists to the area.

Kerry Geopark is a community initiative on the Iveragh Peninsula which aims to promote geotourism in this area of high geological importance. Some of the interest features are Kenmare Bay (a drowned river valley or ria), signs of past glaciation and volcanic activity and 400-million-year-old fossilised tetrapod tracks.

Cloghanecarhan, a ringfort with ogham stone, is a National Monument; as is Leacanabuaile, a stone ringfort (cashel).

Loher Cashel, a stone ringfort (caiseal) is located at the western edge of Iveragh.