Bishop Louis-Marie Ling Mangkhanekhoun was born on April 8, 1944, in Bonha-Louang. He was ordained priest on Nov. 5, 1972. Pope John Paul II appointed him on Oct. 30, 2000, as vicar apostolic of Paksé. His episcopal ordination was on April, 22, 2001.
On Dec 16, 2017, he was appointed vicar apostolic of Vientiane. On April 22, 2018, he was installed as cardinal-priest of San Silvestro in Capite.