| EQUIVALENTS |
| DANISH: Casper, Jesper, Kasper |
| DUTCH: Casper, Jasper, Kasper |
| ENGLISH: Jasper |
| FRENCH: Gaspard |
| GERMAN: Kaspar |
| HUNGARIAN: Gáspár |
| ITALIAN: Gaspare, Gasparo |
| JUDEO-CHRISTIAN LEGEND: Caspar, Gaspar, Jasper |
| LATVIAN: Kaspars |
| LITHUANIAN: Kasparas |
| NORWEGIAN: Casper, Kasper |
| POLISH: Kacper, Kasper |
| PORTUGUESE: Gaspar |
| SLOVENE: Gašper |
| SPANISH: Gaspar |
| SWEDISH: Casper, Kasper |
| DIMINUTIVES AND SHORT FORMS |
| DUTCH: Cas |
| HUNGARIAN: Gazsi |