The Baronetcy of Crannchóiste is a baronetcy in the Rockallic Federal District in Rockall, a member nation of the Seafaring Confederation. It is one of five baronetcies that together form the city of An Bhá nan Éirith Ghréine; the others are An Bhá nan Éirith Ghréine, Léacheannelochián, Iònnegéadhna and An Iméallean na nCháteair. It is the third largest baronetcy in both area and population size, with 501,220 inhabitants.