UCSD
| Acronym | Definition |
|---|---|
| UCSD | University of California, San Diego (La Jolla, California) |
| UCSD | Urbandale Community School District (Iowa) |
| UCSD | User Centered System Design |
| UCSD | Utica City School District (New York) |
| UCSD | Urbana-Champaign Sanitary District (Illinois) |
| UCSD | Ultra Cool Sexy Dudes |
| UCSD | University of California, Sunny Dale (Buffy the Vampire Slayer, fictional) |