Abstract: Prof. Mohamed Taha Al-jasser (1928-2019)The Journal of Anesthesia Essays and Researches (aeronline.org) and the Pan Arab Federation of Anesthesia Societies with an extreme sense of loss share the sad news of the passing away of one of the great pillars of anesthesiology and a prominent member of the Anesthesia History Middle East Society, Dr. Mohamed Taha Al-jasser. We stand today with the Department of Anesthesiology at Aleppo University, the Syrian Medical Association, and the Syrian Society of Anesthesiologists, who have announced the news of this great loss with the world. Professor Dr. Mohamed Taha Al-jasser was one of the well-known pioneers who unconditionally contributed to anesthesia. With his distinguished academic career, he fulfilled many different roles in the community. He was a dedicated professor, the Chairman of the Department of Anesthesia in Aleppo University (1977-2005), and also the Chairman of the Board Examination Committee of Anesthesia in Damascus, Syria (1993–2001). Throughout his medical career, he academically excelled as a scholar and modernized Syrian anesthesia. He preserved a solid global reputation as a medical historian author who published articles and reports about the Arab contributions to science and anesthesia under the name “The History of Anesthesia in Arab and Islamic Medicine-ancient and modern.” He was a member of the Editorial Board of Anesthesia Essays and Researches Journal. He will be remembered as the one who wrote a textbook about “Basic and Clinical Anesthesia” in Arabic, which was helpful for university graduates and postgraduate students. We would like to express, on behalf of the journal's editorial board, our deepest condolences on the loss of Dr. Mohamed Taha Al-jasser to his lady wife, his children, Massoun Al-jasser, Raed Al-jasser, Saed Al-jasser, his grandchildren, and to the rest of his family members, and would like to extend our deepest sympathy with the Arab world and Syria, the land of greats and the cradle of civilization. M.S.M.T