Djamaa el Djazaïr (larabci: جامع الجزائر), wanda kuma aka fi sani da Babban Masallacin Algiers (Faransanci: Grande mosquée d'Alger), masallaci ne a Algiers, Algeria. Yana dauke da babbar minaret a duniya kuma shine masallaci mafi girma na uku a duniya bayan Babban Masallacin Makka da Al-Masjid an-Nabawi na Madina a Saudi Arabia.. Ginin masallacin ya fara ne a watan Agustan 2012 bayan kwangilar gwamnatin Aljeriya, kan euro biliyan 1, kamfanin Injiniyan Gine-gine na Kasar China ne ya lashe shi. Masu zane-zanen Jamus KSP Juergen Engel Architekten da injiniyoyi Krebs und Kiefer International ne suka yi zane kuma aka kammala shi a watan Afrilu 2019. Masallacin ya gamu da jinkirin ginawa saboda matsalolin kasafin kudi saboda faduwar farashin mai. Kimanin ma'aikata dubu biyu da dari uku ne daga China, Algeria da wasu kasashen Afirka aka tura don yin aikin. Gina masallacin da mutane da yawa suka ga ya zama alama ce ta mulkin tsohon shugaban kasar Abdelaziz Bouteflika. Masallacin yana zaune akan wani shafi wanda yakai 400,000 m2 (4,300,000 sq ft) kuma yana kallon Tekun Bahar Rum.