Tawilayt n Tlemsan d Tawilayt deg tmurt n Lezzayer. Zedɣen-tt 949 135 n yimezdaɣen. Ma d tajumma-ines tesɛa azal n 9 061 km². Tamanaɣt ines d tamdint n tlemsan. Tawilayt-a tebḍa ɣef 20 n tdayriwin: Tadayra n Ɛin Talut (Ɛin Talut, Ɛin Nḥala)Tadayra n Bab Lɛessa (Sswani, Bab Lɛessa, Suq Ttlata)Tadayra n Bni Busɛid (Sidi Mǧahed, At Busɛid)Tadayra n Wat Snus (Leɛzayel, Bni Behdel, At Snus)Tadayra n Bensekran (Bensekran, Sidi Ɛebdelli)Tadayra n Cetwan (Amieur (fr) , Ɛin Fezza, Ceṭwan)Tadayra n Fellawsen (Aïn Fetah (fr) , Ɛin Kbira, Fellawsen)Tadayra n Ɣazawat (Ɣazawat, Dar Yeɣmurasen, Sswaḥleyya, Tienet (fr) )Tadayra n Leḥnaya (Leḥnaya, Ouled Riyah (fr) , Zenata (fr) )Tadayra n Hunayn (Bni Xellad, Hunayn)Tadayra n Meɣneyya (Meɣneyya, Ḥemmam Buɣrara)Tadayra n Menṣura (Bni Mestar, Aïn Ghoraba (fr) , Lmenṣura, Tirni Bni Hidel)Tadayra n Merṣa Ben Mhidi (Merṣa Ben Mhidi, Msirda Fwaga)Tadayra n Nedruma (Nedruma, Djebala (fr) )Tadayra n Wlad Mimun (Wlad Mimun, Bni Ṣemyel, Wad Lexḍer)Tadayra n Rremci (Ɛin Yusef, El Fehoul (fr) , Bni Wersus, Rremci, Sebɛa Cyux)Tadayra n Ṣebra (Ṣebra, Buḥlu)Tadayra n Sebdu (Lgur, Sebdu, Leɛrica)Tadayra n Sidi Ǧilali (Bwiḥi, Sidi Ǧilali)Tadayra n Tlemsan (Tlemsan)