2002 TRIO ThinkQuest Semifinalists
| State | Institution & Program | Site Title |
| CA | Modesto Junior College Talent Search |
Hmong New Year |
| CA | Calif. State University, Chico Upward Bound | Seven Wonders of the World |
| CA | Calif. State University, Chico Upward Bound | Smoking Hazardz |
| CA | Calif. State University, Chico Upward Bound | Headaches: Learn to Lighten Your Load |
| CA | Calif. State University, Chico Upward Bound |
Wind, Water, Land |
| CA | Calif. State University, Chico Upward Bound | Japan's War |
| CA | Calif. State University, Fullerton Upward Bound | Female Genital Mutilation |
| CA | University of California, Irvine Upward Bound | The Reality of Autism |
| FL | Florida A&M University UB Math/Science | The Nine Planets |
| FL | Florida A&M University UB Math/Science | Dominating Genes |
| FL | Florida A&M University UB Math/Science | Six Simple Machines of a Bicycle |
| FL | Florida A&M University UB Math/Science | The Truth About STDs |
| FL | Florida A&M University UB Math/Science | Circulatory System: Highway to Life |
| FL | Florida A&M University UB Math/Science | Mathematical Hairstyles in the New Millennium |
| FL | Florida A&M University UB Math/Science | All Shaken Up |
| FL | Florida A&M University UB Math/Science | "Styles On the 50" |
| GU | University of Guam Talent Search |
Our Solar System |
| GU | University of Guam Talent Search |
Legends and Myths of Guam |
| GU | University of Guam Talent Search |
Clearly Cancer |
| GU | University of Guam Talent Search |
The Federated States of Micronesia |
| HI | Leeward Community College Upward Bound | Art from the Heart |
| HI | Leeward Community College Upward Bound | Filipino Cuisine 101 |
| OR | Portland State University Talent Search |
Human Competition |
| WA | Big Bend Community College Upward Bound | Fiber Optics |
| WA | University of Washington Upward Bound |
The Water We Drink |
| WA | University of Washington Upward Bound |
Sky Odyssey |
| WA | University of Washington Upward Bound |
The Path of Innocence |
| WA | University of Washington Upward Bound |
Stressed Out: A Teenager's Perspective |
| WA | University of Washington Upward Bound |
Freedom Summer |
| WA | University of Washington Upward Bound |
Vietnam Revisited |