| EQUIVALENTS |
| ANCIENT GREEK: Markos |
| ANCIENT ROMAN: Marcus |
| BASQUE: Marko |
| BIBLICAL GREEK: Markos |
| BIBLICAL LATIN: Marcus |
| BIBLICAL: Mark |
| BULGARIAN: Marko |
| CATALAN: Marc |
| CORNISH: Margh |
| CROATIAN: Marko |
| CZECH: Marek |
| DANISH: Marcus, Mark, Markus |
| DUTCH: Marco, Mark |
| ENGLISH: Marcus, Mark |
| FINNISH: Markku, Marko, Markus |
| FRENCH: Marc |
| GERMAN: Marco, Markus |
| GREEK: Markos |
| HAWAIIAN: Maleko |
| HUNGARIAN: Márk |
| IRISH: Marcas |
| ITALIAN: Marco |
| LATVIAN: Markuss |
| MACEDONIAN: Marko |
| NORWEGIAN: Marcus, Mark, Markus |
| POLISH: Marek |
| PORTUGUESE: Marco, Marcos |
| ROMAN MYTHOLOGY: Mars |
| RUSSIAN: Mark |
| SCOTTISH: Marcas |
| SERBIAN: Marko |
| SLOVAK: Marek |
| SLOVENE: Marko |
| SPANISH: Marco, Marcos |
| SWEDISH: Marcus, Mark, Markus |
| UKRAINIAN: Marko |
| WELSH: Marc |
|
| DIMINUTIVES AND SHORT FORMS |
| PORTUGUESE: Marquinhos |
|
| OTHER FORMS |
| ANCIENT ROMAN: Marcella, Marcellina, Marcellinus, Marcellus, Marcia, Marciana, Marcianus, Marcius |
| BASQUE: Martzel |
| CATALAN: Marcel |
| CZECH: Marcel, Marcela |
| DUTCH: Ceel, Marcel, Marcellus |
| ENGLISH: Marcelyn, Marci, Marcia, Marcie, Marcy, Marsha, Salena, Salina, Selina |
| FRENCH: Céline, Marcel, Marceline, Marcelle, Marcellette, Marcellin, Marcelline |
| GERMAN: Marcel, Marcell, Marcella, Marcellus, Marzell, Zella |
| HUNGARIAN: Marcell |
| ITALIAN: Celino, Marcella, Marcellino, Marcello, Marciano, Marzia, Marzio |
| POLISH: Celina, Marcel, Marcela, Marceli, Marcelina |
| PORTUGUESE (BRAZILIAN): Marciana, Marciane |
| PORTUGUESE: Marcelinho, Marcelino, Marcelo, Márcia, Marciano, Márcio |
| ROMANIAN: Marcel, Marcela |
| SCOTTISH: Marsaili |
| SLOVAK: Marcel |
| SPANISH: Celino, Marcela, Marcelino, Marcelo, Marcia, Marciano, Marcio |
|