| EQUIVALENTS |
| ANCIENT SCANDINAVIAN: Helga |
| BULGARIAN: Olga |
| CZECH: Olga |
| DANISH: Helga, Hella, Helle, Laila, Olga |
| DUTCH: Helga |
| FINNISH: Aila, Helka, Laila, Oili |
| GERMAN: Helga, Hella, Olga |
| HUNGARIAN: Helga, Olga |
| ICELANDIC: Helga, Olga |
| ITALIAN: Olga |
| LATVIAN: Olga |
| NORWEGIAN: Helga, Hella, Laila, Olga |
| POLISH: Olga |
| PORTUGUESE: Olga |
| ROMANIAN: Olga |
| RUSSIAN: Olga |
| SAMI: Áile, Láilá |
| SERBIAN: Olga |
| SLOVAK: Oľga |
| SLOVENE: Olga |
| SPANISH: Olga |
| SWEDISH: Helga, Hella, Laila, Olga |
| UKRAINIAN: Olga, Olha |
|
| DIMINUTIVES AND SHORT FORMS |
| DANISH: Hege |
| MACEDONIAN: Olgica |
| NORWEGIAN: Hege |
| RUSSIAN: Olya |
| SERBIAN: Olgica, Olja |
|
| MASCULINE FORMS |
| ANCIENT SCANDINAVIAN: Helgi |
| DANISH: Helge |
| GERMAN: Helge |
| NORWEGIAN: Helge |
| RUSSIAN: Oleg |
| SWEDISH: Helge |
|
