| EQUIVALENTS |
| ANCIENT GERMANIC: Hrodulf, Hrolf |
| ANCIENT SCANDINAVIAN: Hrólfr, Hróðólfr |
| ANGLO-SAXON: Hroðulf, Hrothulf |
| ARMENIAN: Rudolf |
| CROATIAN: Rudolf |
| CZECH: Rudolf |
| DANISH: Rolf, Rudolf |
| DUTCH: Rodolf, Roelof, Rudolf |
| ENGLISH: Rodolph, Rolf, Rollo, Rolo, Rolph, Rudolph |
| FRENCH: Rodolph, Rodolphe |
| GERMAN: Rodolf, Rolf, Rudolf |
| HUNGARIAN: Rudolf |
| ITALIAN: Rodolfo |
| MEDIEVAL ENGLISH: Roul |
| MEDIEVAL FRENCH: Roul |
| NORWEGIAN: Rolf, Rudolf |
| POLISH: Rudolf |
| PORTUGUESE: Rodolfo |
| RUSSIAN: Rudolf |
| SLOVENE: Rudolf |
| SPANISH: Rodolfo |
| SWEDISH: Rolf, Rudolf |
| DIMINUTIVES AND SHORT FORMS |
| DUTCH: Roel, Ruud |
| ENGLISH: Rudy |
| GERMAN (SWISS): Ruedi |
| GERMAN: Rudi |
| HUNGARIAN: Rudi |
| SPANISH: Fito, Rodolfito |
| SWEDISH: Roffe |