Tawilayt n Lemdeyya d Tawilayt deg tmurt n Lezzayer. Zedɣen-tt 819 932 n yimezdaɣen. Ma d tajumma-ines tesɛa azal n 8 866 km². Tamanaɣt ines d tamdint n lemdeyya. Tawilayt-a tebḍa ɣef 19 n tdayriwin: Tadayra n Ɛin Busif (Ɛin Busif, Kaf Lexḍer, Sidi Damed, Leɛwinat, Wlad Meɛref)Tadayra n Ɛaziz (Ɛaziz, Derrag, Um Leǧlil)Tadayra n Bni Sliman (Bni Sliman, Sidi Rrbiɛ, Busken)Tadayra n Berwageyya (Berwageyya, Wlad Dayed, Rrebɛeyya)Tadayra n Ccehbuneyya (Ccehbuneyya, Buɛic, Buɣezzul)Tadayra n Cellalet Leɛdawra (Cellalet Leɛdawra, Cnigel, Tafrawt, Ɛin Leqṣir)Tadayra n Leɛzizeyya (Leɛzizeyya, Imeɣrawen, Mihub)Tadayra n Lɛumareyya (Lɛumareyya, Wlad Brahim, Beɛṭa)Tadayra n Lgelb Lekbir (Lgelb Lekbir, Sedraya, Bir Ben Ɛabed)Tadayra n Qṣer Lbuxari (Qṣer Lbuxari, Saneg, Mfatḥa)Tadayra n Lemdeyya (Lemdeyya, Draɛ Ssemmar, Tamezgida)Tadayra n Wamri (Wamri, Wad Ḥerbil, Ḥennaca)Tadayra n Wlad Ɛenṭer (Wlad Ɛenṭer, Wlad Hellal, Buɣar)Tadayra n Wezra (Wezra, Ḥemdaneyya, Benchicao (fr) , Tizi Mehdi)Tadayra n Seɣwan (Seɣwan, Meǧber, Zubireyya, Tlatet Dwayer)Tadayra n Si Lmeḥǧub (Si Lmeḥǧub, Buɛicun, Wlad Buɛecra)Tadayra n Sidi Neɛman (Sidi Neɛman, Bucraḥil, Xems Ǧwameɛ)Tadayra n Sswagi (Sswagi, Ǧwab, Sidi Zehhar, Sidi Zeyyan)Tadayra n Teblaḍt (Tablaḍt, Lɛisaweyya, Mezɣenna, Deux Bassins (fr) )