The Hanbali (Arabic: حنبلى‎) school (madhhab) is one the schools of Fiqh or religious law within Sunni Islam. The jurisprudence school traces back to Imam Ahmad ibn Hanbal (d. 855) but was institutionalized by his students. Hanbali jurisprudence is considered very strict and conservative, especially regarding questions of dogma and cult. It is mainly prevalent in Saudi Arabia though it is heavily influenced by the Zaahiri school. Currently it is being revived in western countries, with new books and classes being taught for English-speaking people. It is also the main madh'hab of the important Islamic pilgrimage sites of Mecca and Medina.

Hanbal refuted and rejected the Jahmites' and the Mu`tazilites' views of God. For Hanbal, both the Jahmites and the Mu`tazilites erred in conceiving of God without eternal attributes. Hanbal believed that God has many attributes and names as mentioned in the Quran and the Prophetic Traditions and that God is One. Hanbal asserted that God's Oneness was not understood by the Jahmites and the Mu`tazilites. Hanbal stated that the ahl al-sunnah wa-al-jama`ah, or Sunnis, believe that God is eternal with His power and light and that He speaks, knows, and creates eternally.

Imam Muhammad al-Asi (Arabic: محمّد العاصي) is the Muslim imam (leader) who formerly led prayer at the Islamic Center of Washington, and currently spends most of his time teaching and working on the first Quranic exegesis to be written originally in English. Al-Asi was elected as the Imam of the masjid in 1981. In March 1983, al-Asi was expelled from the center for preaching views that were deemed antithetical to the Saudi establishment. Although he still identifies himself as Imam of the Islamic Center, the Center has stated that it has no affiliation with him. He still holds Jumu'ah khutbahs every Friday on the sidewalk in front of the Islamic Center.

Muhammad al-Asi was born in Grand Rapids, MI in 1951. At the age of 11 he moved to Lebanon. There, he completed high school and attended the Arab University of Beirut, where he intensively studied the Arabic language. In 1973, al-Asi returned to the U.S. and attended the University of Maryland, graduating with a degree in Government and Politics in 1979.

Zakir Abdul Karim Naik (Urdu: ذاکر عبدالکریم نائیک; born 18 October 1965) is an Indian public speaker on the subject of Islam and comparative religion. He is the founder and president of the Islamic Research Foundation (IRF), a non-profit organisation that owns the Peace TV channel based in Dubai, UAE. He is sometimes referred to as a televangelist. Before becoming a public speaker, he trained as a doctor. He has written two booklets on Islam and comparative religion. He is regarded as an exponent of the Salafi ideology; he places a strong emphasis on individual scholarship and the rejection of "blind Taqlid", which has led him to repudiate the relevance of sectarian or Madh'hab designations, all the while reaffirming their importance.

Zakir Abdul Karim Naik was born on 18 October 1965 in Mumbai, India. He attended St. Peter's High School in Mumbai. Later he enrolled at Kishinchand Chellaram College, before studying medicine at Topiwala National Medical College and Nair Hospital and later the University of Mumbai, where he obtained a Bachelor of Medicine and Surgery (MBBS). His wife, Farhat Naik, works for the women's section of the IRF.

Zain ad-Din, Abu al-Faraj, 'Abd ar-Rahman ibn Ahmad ibn 'Abd ar-Rahman ibn al-Hasan ibn Muhammad ibn Abi al-Barakat Mas'ud as-Sulami, al-Baghdadi, al-Hanbali, also known as Ibn Rajab, which was a nickname he inherited from his grandfather who was born the month of Rajab, was a Muslim scholar.

Imam ibn Rajab was born in Baghdad in 1335 (736H). His grandfather was a scholar of Islam with a focus in Hadith. His father, also born in Baghdad, studied under a number of scholars. At the age of five ibn Rajab's family moved to Damascus, then traveled to Jerusalem where he studied under al-Alla'i, then back to Baghdad and from there to Mecca. While in Mecca his father arranged for him to study Islam as well. He then traveled to Egypt before returning to Damascus, where he taught students of his own. Some of the scholars he studied under were ibn an-Naqeeb (d. 769H), as-Subki, al-Iraqi (d. 806H), and Muhammad ibn Ismail al-Khabbaz. He also studied with Ibn Qayyim al-Jawziyyah up to ibn Qayyim's death. Ibn Rajab's commentary on the forty hadith of Nawawi (Jami' al-Ulum wa al-Hikam) is the largest as well as generally being considered the best commentary available. Near the end of his life, Ibn Rajab began composing a commentary on Sahih Bukhari, but unfortunately only reached the chapter on the funeral prayers before he died. He had named his work Fath al-Bari and what he did write has been published by Dar Ibn al-Jawzi in seven volumes. This amounts to less than a sixth of Sahih Bukhari. Twenty years after Ibn Rajab's death, Ibn Hajar al-Asqalani began his commentary on Sahih Bukhari and gave his own work the same title in honour of Ibn Rajab.

Taqi ad-Din Ahmad ibn Taymiyyah (January 22, 1263–1328 CE), full name: Taqī ad-Dīn Abu 'l-ʿAbbās Aḥmad ibn ʿAbd al-Ḥalīm ibn ʿAbd as-Salām Ibn Taymiya al-Ḥarrānī (Arabic: تقي الدين أبو العباس أحمد بن عبد السلام بن عبد الله ابن تيمية الحراني‎), was an Islamic scholar (alim), theologian and logician born in Harran, located in what is now Turkey, close to the Syrian border. He lived during the troubled times of the Mongol invasions. He was considered by his followers to be a member of the school founded by Ahmad ibn Hanbal and sought the return of Islam to what he viewed as earlier interpretations of the Qur'an and the Sunnah.

Ibn Taymiyya was born in 1263 at Harran into a well-known family of theologians and died in Damascus, Syria, outside of the Muslim cemetery. His grandfather, Abu al-Barkat Majd ad-deen ibn Taymiyyah al-Hanbali (d. 1255) was a reputable teacher of the Hanbali school of law. Likewise, the scholarly achievements of ibn Taymiyyah's father, Shihab al-deen 'Abd al-Haleem ibn Taymiyyah (d. 1284) were well known. Because of the Mongol invasion, ibn Taymiyyah's family moved to Damascus in 1268, which was then ruled by the Mamluks of Egypt. It was here that his father delivered sermons from the pulpit of the Umayyad Mosque, and ibn Taymiyyah followed in his footsteps by studying with the scholars of his time. Although some claim that he was of Kurdish origin there seems to be no evidence indicating such claim.^{[citation needed]}