Sonam Drakpa (Tibetan: བསོད་ནམས་གྲགས་པ, Wylie: bSod-nams grags-pa, 1359–1408) was a regent of Central Tibet who ruled in 1381–1385.
Sonam Drakpa was the son of Rinchen Dorje, a brother of the regent Jamyang Shakya Gyaltsen.
At the age of nine he was elevated to abbot of the Tsethang monastery, succeeding his eldest brother Drakpa Rinchen.
[2] The Hongwu Emperor of the Ming dynasty conferred the title Guanding Guoshi on Sonam Drakpa, who is called Sonan Jiasibayi Jian Cangbu in the dynastic annals.
[3] That the Ming dynasty had limited insight in Tibetan affairs at this time is indicated by the erroneous statement that Sonam Drakpa directly succeeded his uncle Jamyang Shakya Gyaltsen.