Muhammad Asadullah Al-Ghalib (; born 15 January 1948) is a Bangladeshi reformist Islamic scholar, educator, reformist preacher, and former professor of Arabic at the University of Rajshahi. He is best known as the founder and Ameer (President) of the Ahlehadeeth Andolon Bangladesh, a Salafi Islamic reform movement. He is also the founder of several Islamic educational and charitable institutions across Bangladesh. He is also the founder of an Islamic research journal, Monthly At-tahreek.
On 23 February 2005, the Bangladesh government arrested him following allegations of Islamic militancy. He was further alleged to have received funding from the Society of the Revival of Islamic Heritage. However, he denied any involvement with Islamic militancy and was freed from jail on 28 August 2008. He was eventually acquitted of all charges.
He has founded various religious, educational and non-profit social welfare organizations in Bangladesh.
In 2005, in conjunction with the protests led by the chief cleric, Ubaidul Haq, he led a protest in Rajshahi to condemn a series of bombings.
In 2005, Dr. Ghalib was arrested by the Bangladeshi government under allegations of militancy, which he and his organization strongly denied. After extended legal proceedings, he was acquitted of all charges, and no evidence was found linking him to extremist activities. The case is widely seen by his followers as politically motivated.
Ghalib is widely regarded as a reformer and a leading figure in the revival of hadith-centric puritan Islam in Bangladesh. His movement has played a major role in promoting authentic Islamic education, organizing religious seminars, and establishing humanitarian services.
His leadership continues to influence younger scholars and students who align themselves with the Salafi and Ahl-e-Hadith ideology.