The term Prince is used to refer to the children of royalty, the term (or an equivalent of it in the peoples native tongue) is used on almost every world.
Mars
In Martian hierarchy, prince is a title often bestowed upon the sons of Jeds or Jeddaks.
- Astok of Dusar; abducted Princess Thuvia of Ptarth and tried to make it look like his rival Carthoris had done it to cause a war between Helium and Ptarth.
- John Carter of Helium and Warlord of Mars
- Carthoris of Helium
- Haj Alt of Tjanath
- Jad-Han of Amhor, an ally of John Carter
- Jal Had of Amhor; invaded Duhor in attempt to kidnap Princess Valla Dia
- Mu Tel of Toonol; attempted to overthrow his uncle Vobis Kan, the Jeddak of Toonol
- Pnoxux of Invak
- Sab Than of Zodanga; tried to force Princess Dejah Thoris of Helium to marry him in exchange for peace between the two kingdoms. Later killed by Tars Tarkas.
- Sovan of Ptarth, Jedwar of the Ptarthian navy
- Talu of Marentina; nephew of Salensus Oll, the Jeddak of Okar