List of Famous people who died at 40

Abbas al-Moussawi Arabic: عباس الموسوي‎; 26 October 1952 – 16 February 1992) was an influential Lebanese Shia cleric, co-founder and Secretary General of Hezbollah. He was killed by the Israel Defense Forces in 1992.

Robert Alexander "Jeep" Swenson Jr. was an American professional wrestler, stuntman and actor.

Habib Munzir bin Fuad Al-Musawa was an Indonesian Islamic cleric, teacher, da'i and founder of the Majelis Rasulullah religious organization.

Jean-Christophe Lafaille was a French mountaineer noted for a number of difficult ascents in the Alps and Himalaya, and for what has been described as "perhaps the finest self-rescue ever performed in the Himalaya", when he was forced to descend the mile-high south face of Annapurna alone with a broken arm, after his climbing partner had been killed in a fall. He climbed eleven of the fourteen eight-thousand-metre peaks, many of them alone or by previously unclimbed routes, but disappeared during a solo attempt to make the first winter ascent of Makalu, the world's fifth highest mountain.

Agathe Uwilingiyimana, sometimes known as Madame Agathe, was a Rwandan political figure. She served as Prime Minister of Rwanda from 18 July 1993 until her assassination on 7 April 1994, during the opening stages of the Rwandan genocide. She was Rwanda's first and so far only female prime minister.

Scott Matzka was an American professional ice hockey player.

Jefri Al Buchori, colloquially known as Ustadz Uje, was an Indonesian Islamic preacher, da'i, singer, and actor. He was known as an Islamic preacher with young and charismatic charm and who frequently appeared on pop culture scene.

Walter Simon Notheis, Jr., best remembered by his stage name of Walter Scott, was an American singer who fronted Bob Kuban and The In-Men, a St. Louis, Missouri-based rock 'n' roll band that had brief national popularity during the 1960s.

Atsushi Kuroi was a Japanese professional drifting driver who competed in the D1 Grand Prix series for Team Toyo with River Side. He died on 2 February 2010 during the evening due to a motorcycle accident.

Sherwin Siy was an American attorney and activist who served as the lead public policy manager at the Wikimedia Foundation. He was also a member and previously served as vice-president of legal affairs at the Washington, D.C.-based digital rights group Public Knowledge and as a special counsel for the Federal Communications Commission.