Encyclopedias, Almanacs, Transcripts, and Maps
- United States–Latin American Relations
- United States–Mexico Border
- Unity and Disunity in Science
- Unity and Reform
- Universal Properties in Indian Philosophical Traditions
- Universals, A Historical Survey
- Universidad Autónoma de Santo Domingo
- Universidad Católica Madre y Maestra
- Universidad Central de Venezuela
- Universidade de Campinas
- Universidade de São Paulo
- University of Jordan
- University of Khartoum
- University of Tehran
- University of the West Indies
- Unser, Al(fred), Jr.
- Unser, Al(fred), Sr.
- Updike, John Hoyer
- UPPER CASE
- Upshaw, Eugene Thurman, Jr. ("Gene")