ZSU

ZSU may refer to:


 * Armed Forces of Ukraine (Збройні сили України)
 * Self-propelled anti-aircraft weapon (зенитная самоходная установка)
 * ZSU-37, based on the chassis of the SU-76M and developed by the end of 1943
 * ZSU-57-2, developed by the 1950s, twin 57mm autocannon
 * ZSU-23-4, successor of the ZSU-57-2, four barrel 23mm autocannon
 * ZSU-23-4MP Biała, Polish modification of the ZSU-23-4
 * Sun Yat-sen University (Zhong Shan University, in Chinese)
 * Z Special Unit, a World War II unit