The Baronetcy of Iònnegéadhna 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, An Iméallean na nCháteair, Crannchóiste and Léacheannelochián. It is the second smallest baronetcy in area and the smallest in population size, with 442,746 inhabitants.