Encyclopedias, Almanacs, Transcripts, and Maps
- Tierney, Gene Eliza
- Tietê River
- Tigres del Norte, Los
- Tigris and Euphrates Rivers
- Tikopia
- Tikriti Families
- Tilden, William Tatem, Jr. ("Bill")
- Tillich, Paul (1886–1965)
- Tillman, Patrick Daniel (“Pat”)
- Timar
- Time in Continental Philosophy
- Time in Physics
- Time, Being, and Becoming
- Time, Consciousness of
- Timerman, Jacobo (1923–1999)
- TIMESPEAK
- Timorese
- Timucua
- Tin Industry
- Tinajero Martínez de Allen, Eugenia