
The six regions of Eritrea are divided into administrative subregions.

Adi Tekelezan Subregion is a subregion in the northwestern Anseba region of Eritrea. The capital lies at Adi Tekelezan.

Are'eta Subregion is a subregion in the Southern Red Sea region of Eritrea. With its capital at Tiyo, the administrative district's coastline includes the Bay of Anfilla.

Asmat Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Asmat.

Berikh Subregion is a subregion in the central Maekel region of Eritrea. Includes Berikh district and the capital lies at Berikh.

Elabered Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Elabered.

Geleb Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Geleb.

Habero Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Habero.

Hagaz Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Hagaz (Hagat).

Halhal Subregion is a subregion in the northwestern Anseba region of Eritrea. Situated 12 km north of Keren (Cheren), its capital lies at Halhal.

Hamelmalo Subregion is a subregion in the northwestern Anseba region of Eritrea.

Keren Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Keren (Cheren).

Kerkebet Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Kerkebet (Carcabat).

Sela Subregion is a subregion in the northwestern Anseba region of Eritrea. Its capital lies at Sela.

Southern Denkalya Subregion is a subregion in the Southern Red Sea region of Eritrea.

Zalambessa is a small area on the border between Eritrea and Ethiopia claimed by the two countries that clashed especially on this issue in a war between 1998 and 2000. Eritrea believes that it belongs to its Debub Zone, while Ethiopia believes that it belongs to the Misraqawi Zone of Tigray.