Encyclopedias, Almanacs, Transcripts, and Maps
- Helen of Nassau (1831–1888)
- Helen of Schleswig-Holstein (1888–1962)
- Helen of Waldeck and Pyrmont (1861–1922)
- Helen of Waldeck and Pyrmont (1899–1948)
- Helen Paleologina (c. 1415–1458)
- Helena (c. 255–329)
- Helena (fl. after 333 BCE)
- Helena Cantacuzene (fl. 1340s)
- Helena Dragas (fl. 1400)
- Helena Lekapena (c. 920–961)
- Helena of Epirus (fl. 1250s)
- Helena of Russia (1882–1957)
- Helena of Serbia (fl. 1100s)
- Helena Pavlovna (1784–1803)
- Helena Victoria (1870–1948)
- Helene (1903–1924)
- Helene Louise of Mecklenburg-Schwerin (1814–1858)
- Helene of Bavaria (1834–1890)
- Helene of Brunswick-Luneburg (d. 1273)
- Helene of Moldavia (d. 1505)