'''SU2''' may refer to:

* SU(2), the 2-dimensional special unitary group in mathematics * SU-2, a scout version of the Vought O2U Corsair biplane * SU2 code, a suite of open-source software tools written in C++ for the numerical solution of partial differential equations * Sukhoi Su-2, a Soviet reconnaissance and light bomber aircraft used in the early stages of World War II

==Asteroids== * 3158 Anga (provisionally 1976 SU{{sub|2}}), a minor planet discovered on September 24, 1976 * 5499 (provisionally 1981 SU{{sub|2}}), a minor planet discovered on September 29, 1981 * 7887 Bratfest (provisionally 1993 SU{{sub|2}}), a minor planet discovered on September 18, 1993

{{letter-number combination disambiguation}}