San Diego State University
| Former names | San Diego Normal School (1897–1923) San Diego State Teachers College (1923–1935) San Diego State College (1935–1972) California State University, San Diego (1972–1974) | 
|---|---|
| Motto | "Leadership Starts Here" | 
| Type | Public research university | 
| Established | March 13, 1897 | 
| Parent institution | California State University | 
| Accreditation | WSCUC | 
| Academic affiliations | Space-grant | 
| Endowment | $456.6 million (2023-24) | 
| Budget | $1.43 billion (2024-25) | 
| President | Adela de la Torre | 
| Provost | William Tong | 
| Academic staff | 2,135 (fall 2023) | 
| Students | 38,369 (fall 2024) | 
| Undergraduates | 33,839 (fall 2024) | 
| Postgraduates | 4,557 (fall 2024) | 
| Location | , United States 32°46′31″N 117°04′20″W / 32.77528°N 117.07222°W | 
| Campus | Large city, 283 acres (1.15 km2) | 
| Newspaper | The Daily Aztec | 
| Colors | Red and black | 
| Nickname | Aztecs | 
| Sporting affiliations | NCAA Division I FBS – Mountain West | 
| Mascot | Aztec warrior | 
| Website | sdsu | 
| San Diego State College | |
| Location | 5500 Campanile Drive, San Diego, California | 
| Area | 283 acres (114.5 ha) | 
| Architectural style | Mission/Spanish Revival | 
| NRHP reference No. | 97000924 | 
| CHISL No. | 798 | 
| Significant dates | |
| Added to NRHP | September 4, 1997 | 
| Designated CHISL | 1964 | 
San Diego State University (SDSU) is a public research university in San Diego, California, United States. Founded in 1897, it is the third-oldest university and southernmost in the 23-member California State University (CSU) system. SDSU is the oldest higher education institution in San Diego; its academic roots were established as a normal school in University Heights, then known as the San Diego Normal School. In the fall of 2024, the university enrolled over 38,000 students.
SDSU comprises eight colleges and offers over 200 degree programs at the undergraduate and graduate levels. It is accredited by the WASC Senior College and University Commission (WSCUC). The university is classified among "R1: Doctoral Universities – Very high research activity". It is a federally-designated Hispanic-Serving Institution (HSI) as well as an Asian American and Native American Pacific Islander-Serving Institution (AANAPISI).
SDSU's athletic teams compete as the San Diego State Aztecs; the Aztecs nickname was chosen by students in 1925. They compete in National Collegiate Athletic Association (NCAA) Division I, primarily as a member of the Mountain West Conference (Pac-12 Conference starting in 2026). SDSU currently fields varsity teams across 17 NCAA-sanctioned sports. As of 2021, athletes from the university had won 14 medals at the Olympic Games.