Encyclopedias, Almanacs, Transcripts, and Maps
- Isaac the Blind
- Isaac the Good of Langres, St.
- Isaac the Great, Armenian Catholicos, St.
- Isaac, Jules Marx
- Isaac, Testament of
- Isaacs
- Isaacs, Edith Juliet
- Isaacs, Isaiah
- Isaacs, Jacob
- Isaacs, Jacob
- Isaacs, Joseph
- Isaacs, Nathan
- Isaacs, Nathaniel
- Isaacs, Sir Isaac Alfred
- Isaacs, Sir Jeremy
- Isaacs, Susan
- Isaacsohn, Siegfried
- Isaacson, Jose
- Isaak, Heinrich
- Isabella I, Queen of Castile