Salahaddin Muhammad Bahaaddin Sadiq (Arabic: صلاح الدين بهاء الدين) (born 1950) is a Kurdish Iraqi politician. He is the co-founder and current Secretary-General of the Muslim Brotherhood-affiliated Kurdistan Islamic Union.
He was born in Tawela, a town referring to Halabja. He is a graduate of The House of Teachers 1969. He worked as a teacher from 1971 to 1981. Then he was ordered to be arrested by the former Iraqi regime. After he refused to join the Iraqi Army, he was dismissed from his career. Having refused to join the Baath Party, he has been faced many problems and tortured during his life until he left Iraq and spent 10 years in diaspora, living in Iran, Turkey and the Gulf countries. He then returned to his homeland during the Kurdish uprising in 1991 in which the Baath Party was swept out of Kurdistan.
Salaheddin participated in founding Kurdistan Islamic Union on February 6, 1994. In the first General Conference he was elected as the Secretary General of the party. Later, in the second, the third, and the fourth Conferences he was also elected as the Secretary General. Later succeeded by Hadi Ali and Mohammed Faraj, in 2016 he was again elected Secretary-General.
After the fall of the former regime, he was determined to be a member of the Interim Iraqi Governing Council which consisted of 25 Iraqi figures, five of whom were Kurdish. He later became a member of Iraqi National Assembly. Now, he has committed himself as the Secretary General of Kurdistan Islamic Union.
During his lifetime, he has been absorbed in arts, intellectuality, ideology, and Islamic promotion. He has written several books and articles in these fields both in Kurdish and Arabic.