The first official name of the country was "Kingdom of the Croats" (Latin: Regnum Croatorum; Croatian: Kraljevstvo Hrvata), but over the course of time the name "Kingdom of Croatia" (Regnum Croatiae; Kraljevina Hrvatska) prevailed in use.
Riigi esimene ametlik nimi oli "Horvaatide kuningriik" (ladina: Regnum Croatorum; horvaadi: Kraljevstvo Hrvata), kuid aja jooksul muutus nimi "Horvaatia kuningriik" (Regnum Croatiae; Kraljevina Hrvatska) kasutuses valdavaka.