Joan I or Joanna I may refer to:
- Joan I, Countess of Burgundy (1191–1205)
- Joan I of Navarre (1271–1305), daughter of King Henry I of Navarre and Blanche of Artois
- Joan I, Countess of Auvergne (1326–1360)
- Joanna I of Naples (1328–1382)
- Joan I, Countess of Dreux (1345 – 1346), only child of Peter, Count of Dreux
- Joanna of Castile (1479–1555), a.k.a. Joanna I or Juana I, Queen of Castile and Aragon, daughter of Isabella I of Castile and Ferdinand II of Aragon
See also
- Joan Ramon I, Count of Cardona (1375-1441), Catalan nobleman
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: