List of Famous people born on January 31st

Manuel Portela y Valladares was a Spanish political figure during the Second Spanish Republic. He served as the 43rd Attorney General of Spain between 1912 and 1913.

Morteza Motahhari was an Iranian Twelver Shia cleric, philosopher, lecturer. Motahhari is considered to have an important influence on the ideologies of the Islamic Republic, among others. He was a co-founder of Hosseiniye Ershad and the Combatant Clergy Association. He was a disciple of Ruhollah Khomeini during the Shah's reign and formed the Council of the Islamic Revolution at Khomeini's request. He was chairman of the council at the time of his assassination.

Wang Yifang is a Chinese particle and accelerator physicist. He is director of the Institute of High Energy Physics (IHEP) of the Chinese Academy of Sciences in Beijing and known for contributions to neutrino physics, in particular his leading role at Daya Bay Reactor Neutrino Experiment to determine the last unknown neutrino mixing angle θ 13.

Kim Yeon-jung, known professionally as Kenzie, is a South Korean songwriter and record producer who signed under SM Entertainment. She has composed and written mostly songs for SM artists such as BoA, Isak N Jiyeon, Super Junior, The Grace, TVXQ, Girls' Generation, Shinee, f(x), Exo, Red Velvet, SuperM, and NCT, as well as non-SM acts such as Twice, CIX, and The Boyz.

Li Ligong was a Chinese revolutionist and politician.

Ergün Poyraz is a best-selling and prolific Turkish author known for his controversial books about the ruling Justice and Development Party, the Islamic preacher Fethullah Gülen, and people associated with them. He is best known for his 2007 book Children of Moses, which accused Prime Minister Recep Tayyip Erdoğan and his wife of being secret Jews and of cooperating with Israeli intelligence to undermine Turkish secularism. He was arrested in 2007 and was a defendant in the Ergenekon trials; on 5 August 2013, he was sentenced to 29 years in prison.

Chen Hao is a politician of the People's Republic of China, serving since 2016 as Communist Party Secretary of Yunnan province. He was formerly Governor of Yunnan and vice-chairman of the All-China Federation of Trade Unions.