Ma Chen-shan

Ma Chen-shan (born 21 May 1926) is a Chinese former sports shooter. After escaping to Taiwan alongside the Republic of China, he competed as part of Taiwan in the 25 metre pistol event at the 1964 Summer Olympics. He is best known for defecting to China after the competitions as well as allegedly poisoning Yang Chuan-kwang.

Biography Ma was born on 21 May 1926 in Tongliao, Liaobei, China. He joined the National Revolutionary Army at a young age and would follow the Army in their retreat to Taiwan in 1949. After his tenure, he would work at the Highway Bureau and eventually settling for sports shooting, accomplished enough to warrant a space to the 1964 Summer Olympics. Ma was increasingly homesick and critical of the conditions at Taiwan, prompting him and cameraman Chan Jue to defect during the Olympics. Ma was friendly to decathlete Yang Chuan-kwang, handing drinks frequently to him; Yang purported that they had poisoned him which contributed to his sluggish performance. He retired in the 1980s after being promoted to vice chairman of the physical education department of Liaoning.

He turned 100 on 21 May 2026.