Family name Robert Christian (Robert Christian 
) , around the world, is a very rare last name. The surname Robert Christian is habitual in Chile, where it is a rare surname, and Germany, where it is an extremely rare surname. More frequently, Robert Christian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Robert Christian | Germany, Philippines, Chile, Ecuador, Peru |
Tan, Chavez, Cabral, Cables, Cortez, Brandl, Koenen, Rangel, Roerig, Deryck, Gajudo, Hartan, Urieta, Mendoza, Piodina, Guevara, Estrada, Fuentes, Montante, Palmaria, Posthuma, Herrmann, Aquino, Acelar, Arcega, Angelo, Teo, Manz, Cruz, Rick, Ruiz, Tugo, Silva, Capin, Cerda, Klein, Cristobal, Ramos, Reuff, Habel, Hoeve, Obias, Opura, Yebra, Mallam, Mamani, Moreno, Santos, Reyes, and Magallanes