Trinyen Songtsen (Tibetan: ཁྲི་གཉན་གཟུངས་བཙན; Wylie: Khri-gnyan gZung-btsan, Chinese:赤宁松赞) was the 29th King of Bod according to Tibetan legendary tradition.
He was one of the legendary kings and the first of the so-called Pre-Imperial Period (493-630).
Before him there were the so-called Five Unifying Kings whose names ended in Tsen.
Trinyen Songtsen was the son of Thothori Nyantsen[1] The Tibetan Annals state that like his father, Trinyen made offerings with Secret Antidotes and that this is why the kingdom grew during his rule.
[2] It is also stated that Trinyen was buried at Donkhorda, the site of the royal tombs, to the right of his father Thothori's tomb.