ZSU may refer to:
Armed Forces of Ukraine () Self-propelled anti-aircraft weapon () 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