Galkayo (Somali: Gaalkacyo, Arabic: جالكعيو‎), also known as Gallacaio or Rocca Littorio, is the capital of the north-central Mudug region of Somalia. The city is divided into two zones, where the main northern portion forms part of Puntland state, while its southern tip is governed by the Galmudug administration.During the early modern period, the area was ruled by the Sultanate of Hobyo.