Surname Christopher Ryan (Christopher Ryan 
) , across the world, is a very rare last name. The surname Christopher Ryan is habitual in the United Kingdom, where it is an extremely rare surname, and China. Much more prevalently, Christopher Ryan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Christopher Ryan | Australia, China, United States, New Zealand, Philippines |
Poi, Philip, Rey-Hipolito, Torres, Vargas, Ouimet, Whaley, Maniego, Abeleda, Cunanan, Burkett, Griffin, Tampipi, Novales, Martinez, Santonia, Sakowski, Bautista, Bernardo, Estrella, Erickson, Gotschall, Buitizon, Barber, Castro, Andres, Tan, Abut, Chan, Chua, Baun, Erfe, Hogg, Magno, Moore, Sagum, Francisco, Araos, Bojos, Peart, Pogoy, Punta, David, Lugtu, Halog, Zafra, Ursua, Sherry, Bagay, and Villanueva