Ryan \r-yan\ as a boy's name (also used as girl's name Ryan), is pronounced RYE-an. It is of Gaelic origin, and the meaning of Ryan is "king". Also possibly (Gaelic) "water". Actors Ryan O'Neal, Ryan Philippe; baseball player Ryne Sandberg.
Ryan has 6 variant forms: Rian, Rien, Rion, Ryen, Ryon and Ryun.