Qutriyun (also known as Iqlimiyyun or Regionalists) was a faction within the Ba'ath Party that promoted "Syria First" ideas instead of pan-Arabism. Their ideological beliefs were sometimes called "Regionalist Ba'athism." Yassin al-Hafiz, a communist who wrote a number of ideological works such as "Ba'athist experiment" (1963) or "A Few Theoretical Propositions" (1964), had a great influence on the ideology of early Syrian regionalists.
The Qutriyun were the most powerful faction in the Ba'ath Party since it seized power in Syria in 1963, and remained so until the fall of Syrian Ba'athism in 2024. The idea of "Qutriyunism" later also became the concept of Assadism. The term was later applied in the same derogatory manner to competing Islamist militias during the Syrian civil war. Within the party, they were opposed by the Qawmiyuri faction (Nationalists). The most prominent regionalist figures were considered to be Yusuf Zuayyin, Salah Jadid, Muhammad Umran and Hafez al-Assad.