List of Famous people who died at 31

Antonio de Nigris Guajardo was a Mexican professional footballer who played as a striker.

Satnam Singh Khattra was an Indian fitness trainer and a bodybuilder from Bhalmajra, Fatehgarh Sahib district, Punjab.

Lionel Du Fon Pickens, better known by his stage name Chinx, was an American rapper from Queens, New York. He was a member of the Rockaway Riot Squad alongside fellow slain rapper Stack Bundles. Chinx later joined French Montana's Coke Boys Records, gaining recognition for his appearances on the Coke Boys mixtapes and the Cocaine Riot mixtape series. He was killed in a drive-by shooting in Jamaica, Queens, on May 17, 2015. Two accused men have since been arrested in the case.

Sallie-Anne Huckstepp was an Australian writer, sex worker and whistleblower.

Chen Wen-chen was a Taiwanese assistant professor of mathematics at Carnegie Mellon University who died on 3 July 1981 (aged 31) under mysterious circumstances. After the conclusion of his third year of teaching, he returned to his native Taiwan for a vacation. He was instructed not to leave Taiwan on his scheduled departure date. Members of Taiwan's secret police, the Garrison Command, detained and interrogated him for twelve hours on 2 July 1981, and his body was found on the campus of National Taiwan University the next day. The subsequent autopsy reported his death was due to a fall. Chen's death and the earlier massacre of Lin Yi-hsiung's family are cited as late examples of White Terror dissident suppression activities in Taiwan, although the case remains unsolved and the Garrison Command maintains it had nothing to do with his death. In 2020, the Transitional Justice Commission released a report concluding that Chen was most likely killed by state security agencies.

Bassel al-Assad was a Syrian engineer, colonel, and politician who was the eldest son of President of Syria Hafez al-Assad and the older brother of (later) President Bashar al-Assad. It was widely expected that he would succeed his father as President of Syria until he died in a car accident in 1994.

Tunku Alif Hussein Saifuddin Al-Amin ibni Tuanku Muhriz, was the third son of the reigning Yang di-Pertuan Besar of Negeri Sembilan, Tuanku Muhriz ibni Almarhum Tuanku Munawir.

Karine Ruby was a French snowboarder and Olympic champion. She won two medals at the Winter Olympics, with a gold medal at the 1998 Winter Olympics in Nagano, and a silver medal at the 2002 Winter Olympics in Salt Lake City. She also earned six gold medals and four silver medals at the FIS Snowboard World Championships, and 67 wins and 122 podiums at the FIS Snowboard World Cup, which earned her the description by The New York Times as "the most decorated female snowboarder in the world".

Nicolás Javier Naranjo Sánchez was an Argentine road cyclist, who rode for UCI Continental team Agrupación Virgen de Fátima.

Richard Floyd McCoy Jr. was an American aircraft hijacker. McCoy hijacked a United Airlines passenger jet for ransom in 1972. Due to a similar modus operandi, law enforcement officials named McCoy as a suspect for the still-unidentified "D. B. Cooper", who committed his unsolved crime four-and-a-half months before McCoy.