Ahmad bin Ismail al-Jazyiri al-Najafi (Arabic: أحمد بن إسماعيل الجزائري النجفي, romanized: Aḥmad ibn Ismāʻīl al-Jazāʼirī al-Najafī); died 1736) was an Iranian-Iraqi Ja'fari jurist and writer, best known for his 1726 work Qalāʼid al-durar fī bayān āyāt al-aḥkām bi-al-Athār (Arabic: قلائد الدرر في بيان آيات الأحكام بالأثار) which is written about Quran-Fiqh relation by focusing on juristic verses.
Belonged to the Al-Jazairi family, who descended from Banu Asad tribe, they came from Al-Jazayir, whose location was Lake Hammar to Al-Qurnah.
Then worked as a teacher, a large group of 18th century scholars graduated from him, including: his son Muhammad, Nasrallah al-Haeri and Abdul Aziz bin Ahmed Al-Najafi.
He was interested in writing and left several important works in Ja'fari jurisprudence, more famous for his book on Quran-Fiqh relation Qalāʼid al-durar fī bayān āyāt al-aḥkām bi-al-Athār(Arabic: قلائد الدرر في بيان آيات الأحكام بالأثار) which completed in Rajab 1138/ March 1726.
This book made him as one of the figures of the religious scientific revival movement in 18th century Najaf.