Baby Names Boy Names Meaning of the Name Hiero Updated December 6, 2025 by Jennifer M. Hiero Gender: Male Origin: Greek Meaning: Holy ♥ Add to my Namelist What is the meaning of the name Hiero? The name Hiero is primarily a male name of Greek origin that means Holy. People who like the name Hiero also like: Etienne, Lucien, Rhys, Xander, Leander, Calix, Galen, Nyx, Cora, Aileen, Anastasia, Aiko, Delia, Aria Names like Hiero: Haruye, Herrera, Haruhi, Hari, Haruyo, Hira, Harue, Harry, Hiro, Hero, Haru, Hera, Heir Stats for the Name Hiero Hiero is currently not in the top 100 on the Baby Names Popularity Charts Hiero is currently not ranked in U.S. births