The Clan Cian Tartan was designed in 1983, and registered with the Scottish Tartans Society of Scotland. It was further posted with the Chief Herald of Ireland as a certified tartan for use by the Clan Cian-O'Carroll (Ciannachta) of ancient Ormond and the Eile O'Carroll Territory. Other related clans with different family names are also authorized to use the tartan, such as those of the Dal gCas (Dalcassians) of Thomond and the Eugenians (Eoghanachta) of Desmond. The tartan is registered under #89003. The Clan Cian Tartan was also registered in the United States with the Tartan Educational and Cultural Association (TECA) under certificate number 5-1489.

By charter of agreement this tartan is to be used universally by the Dalcassian, Ciannacht, and Eoghanacht family septs, as well as the dependent and related septs of the Province of Munster and other parts of Ireland. If you have the blood of any of these clans in you, you are authorized to wear the Tartan.

The coat of arms of Munster are three gold ancient coronets, two over one in a field of blue representing the three kingdoms of Munster. These were Desmond, Thomond, and ancient Ormond or the Kingdom of Eile. The traditional colors for the Irish Republic were green with a gold harp, but that was later changed to blue with a gold harp.

The Clan Cian Tartan includes the primary colors of the traditional coats-of-arms of the ruling families of these kingdoms. They are the descendants of the three surviving sons of the 3rd century King of Munster, Olliol Ollum. From the senior son, Eoghan Mor II, are the MacCarthys of Desmond. From the second son, Cormac Cas, come the O'Briens of Thomond. From Cian, the youngest son, are the Eile O'Carrolls of Ormond. The primary color of blue represents the province of Munster and the Republic of Ireland.

If you are interested in ordering tartan material or a Clan Cian Tartan, please visit the Clan Shoppe, or contact the main office of Clan Cian, by email by using the Order Department Form.