The 2011–12 San Diego State men's basketball team represented San Diego State University in the 2011–12 college basketball season. It was their 13th season in the Mountain West Conference. This was head coach Steve Fisher's thirteenth season at San Diego State. The Aztecs played their home games at Viejas Arena. They finished with a record of 26–8 overall and 10–4 in Mountain West play to be co-champions of the Mountain West with New Mexico. They lost in the championship game of the Mountain West Basketball tournament to New Mexico. They received an at-large bid into the 2012 NCAA tournament, earning the 6 seed in the Midwest which they lost to North Carolina State in the second round.