The Ó Cuinleáin family is an Irish family name, often anglicized as "Quinlan." This surname is primarily associated with the province of Munster, particularly in County Tipperary and County Limerick. The family has historical roots in Gaelic Ireland, where they were part of the Éoganacht dynasty, known for their influence in the region. Members of the Ó Cuinleáin family have contributed to various fields, including literature, politics, and sports. The name is also linked to several notable individuals, such as John Quinlan, a prominent figure in Irish history. Today, the family continues to be recognized in Ireland and among the Irish diaspora.