Mount Khülio-King(/kʰə.³³lɪɒ³¹.kɪŋ³³/ ) , alternatively called Khelia King, is the second highest peak in the Indian state of Nagaland. It is one of the highest in Khiamniungan region and lies along the India–Myanmar border in Patkai Range. The peak connects Mount Saramati in the east of Patsho village and south of Noklak. This unexplored mountain is a home to variety of flora and fauna and remains snow capped at the peaks during winter. The terrain is relatively virgin and untouched but a home to rich bio-diversity.

Mount Khülio-King is home to rich biodiversity. Abundant natural resources are still intact and human intervention is on the rise. Bird species like Blyth's Tragopan, the state bird of Nagaland can be found in the region surrounding Khülio and beyond the international border in Khiamniungan region. Flowers like Rhododendron, Mountain-ebony and Malberry trees are widely found across Khülio range. The mountain in the region plays a vital role in the lives of the people not only from the point of ecology but it provides a strategic location for defensive purposes for the people during the headhunting days.

To visit and explore the peak which is relatively unknown and almost an unexplored mountain one has to either go to Choklangan or Wui Village, however, the road condition is bumpy and deplorable.