Roman fortifications in Roman Africa

Timgad (, known as Marciana Traiana Thamugadi) was a Roman city in the Aurès Mountains of Algeria. It was founded by the Roman Emperor Trajan around 100 AD. The full name of the city was Colonia Marciana Ulpia Traiana Thamugadi. Emperor Trajan named the city in commemoration of his mother Marcia, eldest sister Ulpia Marciana, and father Marcus Ulpius Traianus.

Haïdra () is a municipality in western Tunisia, containing the ruins of Ammaedara, one of the oldest Roman cities in Africa. It was a diocese and is now a Roman Catholic titular see.

Lambaesis (Lambæsis), Lambaisis or Lambaesa (Lambèse in colonial French), is a Roman archaeological site in Algeria, southeast of Batna and west of Timgad, located next to the modern village of Tazoult. The former bishopric is also a Latin Catholic titular bishopric.

Thelepte () was a city in the Roman province of Byzacena, now in western Tunisia. It is located near the border with Algeria about 5 km north from the modern town of Fériana and 30 km south-west of the provincial capital Kasserine.

Roman frontier defence line

Roman linear defensive structure in northern Africa

Theveste was a Roman colony situated in what is now Tébessa, Algeria.