Ryan

Ryan is an anglicized form of the Irish surname Ó Riain, meaning descendant of Rían, where the personal name Rían likely derives from the Old Irish word for king, combined with a diminutive suffix, giving an approximate sense of little king. The name originated as a hereditary surname in County Tipperary and County Carlow before transitioning into widespread use as a given name, particularly from the mid-twentieth century onward. Its popularity surged across the English-speaking world, especially in the United States, Canada, and Australia, partly through cultural visibility such as the actor Ryan O'Neal. Related forms include Rian, Ryann, and the Irish Rían.