Umananda Devaloi (Pron: ˈʊməˌnændə ˈdeɪvəˌlɔɪ) is a Shiva temple located at the Peacock Island in the middle of river Brahmaputra just opposite the office of the Deputy Commissioner of Kamrup or the Kachari Ghat in Guwahati. It was built by the Ahom King Gadadhar Singha (1681–1696), who was a devout Shaivaite.