Namesakes
Chinese Emperors:
1 emperor
Emperor Zhao Yun 1224-1264 
Notable Businesspeople:
1 businessperson
Jack Ma (a.k.a. Yun) 1964-
Olympic Medalists:
1 bronze, 1 silver, 1 silver/gold
(silver) Nian Yun 1996 swimming - 4x100 m freestyle relay
(silver/gold) Cai Yun 2008; 2012 badminton doubles
(bronze) Hao Yun 2012 swimming