2005 TRIO ThinkQuest Semifinalists
| State | Institution & Program | Site Title |
| CA | California Lutheran University, UBMS | Animation with Racism |
| CA | California Lutheran University, UBMS | The Incredible Water Bear |
| CA | CSU Chico Upward Bound |
Tsunamis |
| CA | CSU Chico Upward Bound |
War in Iraq |
| CA | CSU Monterey Bay Upward Bound |
Chicano Movement |
| CA | CSU Monterey Bay Upward Bound |
Unheard Voices from the Fields |
| KY | Berea College Upward Bound |
Creepy Tales |
| NY | Harlem Center for Education, Talent Search | Explicit Lyrics and its Affects - Best Site from Middle School Award |
| OR | Portland State University Upward Bound |
Oregon's Timber Industry |
| PA | Lincoln University Upward Bound |
Africa: The Motherland of Technological Inventions |
| SD | University of South Dakota, UBMS | Water Chemistry |
| WA | University of Washington Upward Bound |
Lifestyle of the NBA |
| WA | University of Washington Upward Bound |
Negro Leagues |