Ahmad Mustofa Bisri (born 10 August 1944) is an Indonesian Islamic leader from Indonesia and was the ninth Chief Adviser of Nahdlatul Ulama.
He is the head of Pondok Pesantren Raudlatuth Thalibin, Rembang, Central Java, Indonesia.
Mustofa Bisri, well known as Gus Mus, is famous not only as a kyai—traditional Islamic teacher & leader, but also as a poet and painter.
Gus Mus is married to Siti Fatmah and they have 7 (seven) children : Ienas Tsuroiya, Kautsar Uzmut, Raudloh Quds, Rabiatul Bisriyah, Nada, Almas and Muhammad Bisri Mustofa.
In 1970, upon returning from Egypt, he was appointed as board member of Nahdlatul Ulama (NU) Rembang.