[[File:Ardha matsyendrasana.png|thumb|right|''Ardha Matsyendrasana'']]
Ardha Matsyendrasana (Sanskrit: अर्धमत्स्येन्द्रासन; IAST: Ardha Matsyendrāsana), Half Lord of the Fishes Pose,<ref name="Half Lord of the Fishes Pose"/>. Half Spinal Twist Pose<ref name="Half Spinal Twist"/> or Vakrasana<ref name="Vakrasana - Twisted Pose" /> is an asana. The asana usually appears as a seated spinal twist with many variations, and is one of the twelve basic [[asanas]] in many systems of [[Hatha Yogayoga]].<ref name="Ardha-Matsyendrasana" />