- Zahm, Albert Francis, 1862-. ~ AZA
- Zahm, John Augustine, 1851-1921. ~ AMR, BUR, DRI, JZA, OHA, SRJ, STA, ZCB
- Zahn, Gordon Charles, 1918-. ~ CCW, CWL, EEG, PAX, SAW, ZHN
- Zatko, James J. ~ ZTK
- Zenosius; or The Pilgrim-convert. ~ PIS
- Zielinski, Constantine. ~ THO
- Zubiria y Escalante, Jose Antonio Laureano, 1791-1863. ~ ASF