Ye Wanyong (, Hanja: , 7 June 1858 – 12 February 1926), also known as Yi Wanyong, was a politician, diplomat and writer of during the Korean Joseon dynasty. He was prime minister of the Korean Empire in 1896 and from 1907 to 1909. He signed the Japan–Korea Treaty of 1910. His penname was Ildang (일당, 一堂).