Utpaladeva was a Shaiva tantrik philosopher, theologian and poet from Kashmir. He belonged to the Trika Shaiva tradition and is a thinker of the Pratyabhijñā school of monistic idealism. His Īśvarapratyabhijñākārikā is a central text for the Pratyabhijñā school of Shaiva Hindu philosophy. Utpaladeva was also a tantrik guru and a religious bhakti poet, having authored the influential Śivastotrāvalī , a collection of Shaiva hymns that remain popular with Kashmiri Shaivas.