An Undang is a ruling chief or territorial chief who still play an important role in the state of Negeri Sembilan, Malaysia. The name is believed to be derived from the Malay word undang-undang meaning "law". Malaysia's modern day constitution confirms the status of the Undang under Article 71, 160, 181 and Eight Schedule of Federal Constitution as Malay Ruler within the Federation. Undangs are still chosen from amongst certain noble families in the state, the succession being both matrilineal and elective following the Adat Purbakala.