Bukun Ismahasan Islituan (born 1956), also known as Lin Sheng-hsien (林聖賢) in Chinese, is a Taiwanese indigenous poet and writer from Isbukun Bunun. He was born in 1956 in the Maia community, Sanmin Township, Kaohsiung County (now Namasia District, Kaohsiung City). He has served as a junior high school teacher, the chairman of the Indigenous Peoples Cultural Foundation, and the president of the Bunun Cultural Development Association.