Mo Yun-tuan (Chinese: 莫運端; pinyin: Mò Yùnduān; 11 May 1928 – 19 March 2018), known by the pen name Luo Fu (洛夫; Luòfū), was a Taiwanese writer and poet. He was born in Hengyang, Republic of China.
In Taiwan, Mo published several collections of poetry. Mo and his contemporary Yu Kwang-chung were described as the Gemini of Chinese poetry, in reference to the constellation depicting the mythological twins Castor and Pollux. Mo left Taiwan for Canada in 1995.
In June 2016, Mo was diagnosed with lung cancer. He died of respiratory failure on 19 March 2018 in Taipei, aged 89.