YSU

YSU may refer to:


 * Yanshan University, Qinhuangdao, Hebei, China
 * Yerevan State University, Yerevan, Armenia
 * Yogyakarta State University, Yogyakarta, Indonesia
 * Yonsei University, Seoul, South Korea
 * Youngsan University, Busan, South Korea
 * Youngstown State University, Youngstown, Ohio, United States
 * IATA code for Summerside Airport, Prince Edward Island, Canada