The Dikhil Region is a region in southern Djibouti. It is bordered by the Regions of Tadjoura to the north, Arta to the northeast, Ali Sabieh to the east. To the west and south, it has a long line with the Djibouti-Ethiopia border adjacent to the Ethiopia Regions of Afar Region and Somali Region. Dikhil Region is the largest Region in Djibouti by area, with a mainland area of 7,200 square kilometres, it is about the same size as Sikkim. The Dikhil Region's capital is the town of Dikhil.

The Tadjourah Region Somali: Gobolka Tajoora, Afar: Rakaakay Tagórri) is a region in north-central Djibouti, the largest of its six regions. With its capital at Tadjourah, it has an area of 7,100 square kilometres. It lies along the Gulf of Tadjoura, and the coastal city of Tadjoura. The region has active salt and fisheries industries, and is served by the Tadjoura Airport. In total area, it is larger than Brunei and smaller than Cyprus.