Ciriaco is a male given name in Italian (pronounced as /it/) and Spanish (pronounced as /es/). In Portuguese, it's spelled Ciríaco (pronounced as /pt/). It derives from the Greek given name Κυριακός (also Κυριάκος) which means of the Lord or lordly; from the Greek kύριος, kyrios: lord. Thus it is equivalent in meaning to names like Dominic, Dominicus and Domenico.
It may refer to: