Somesvaradeva (Nepali: सोमेस्वरदेव) was a Thakuri king of Nepal who reigned 1178–1183.
[6] Somesvaradeva did not hold any significant authority as the monarch, and numerous local lords assumed sovereignty.
His reign was nominal and insignificant so much that some chronicles completely ignore his name on the list of successions.
[7][8] He was probably deposed in 1183 and following him, the Thakuri dynasty began to collapse.
This came to an end when in c. 1201, Aridev Malla gained power and ruled over the entire valley and started the Malla dynasty.