Gaelic Meaning: The name Ryan is a Gaelic baby name. In Gaelic the meaning of the name Ryan is: Little king. American Meaning: The name Ryan is an American baby name.In American the meaning of the name Ryan is: Little king. Irish Meaning: The name Ryan is an Irish baby name. In Irish the meaning of the name Ryan is: Kingly.aelic Meaning: The name Ryan is a Gaelic baby name. In Gaelic the meaning of the name Ryan is: Little king. American Meaning: The name Ryan is an American baby name.