| Country | Day | Month | Names |
 Bulgaria | 1 | January | Vasil, Vasilena, Vesela, Veselin, Veselina |
| Bulgaria | 2 | January | Ognian, Ogniana, Plamen, Plamena, Serafim, Silva, Silvia, Silviya, Silvana |
| Bulgaria | 4 | January | Tihomir |
| Bulgaria | 6 | January | Bogomil, Bogdan, Bogdana, Bozhidar, Bozhidara, Borislav, Borislava, Jordan, Yordan, Yordanka, Nayden, Teodosii |
| Bulgaria | 7 | January | Ivan, Ivaylo, Ivanka, Vanio, Vania, Encho, Enio, Zhan, Zhana, Ivayla, Ivelin, Ivelina, Ivet, Ivo, Yoan, Ioan, Ioana, Yonka, Yonko, Yoncho, Yoto, Kaloyan, Kaloian |
| Bulgaria | 11 | January | Bogdan, Bogdana, Bogomil, Bogomila, Teodosii |
| Bulgaria | 12 | January | Tanya, Tatyana, Tatiana |
| Bulgaria | 14 | January | Nina, Adam, Kalcho |
| Bulgaria | 17 | January | Andon, Anton, Antonia, Dona, Doncho, Donka |
| Bulgaria | 18 | January | Atanas, Atanaska, Nasko, Tanyu, Tinka, Jivko, Zhivko, Zhivka, Traian |
| Bulgaria | 19 | January | Silvia |
| Bulgaria | 20 | January | Eftim, Efimir, Evtim, Evtimiya, Evtimia, Momchil |
| Bulgaria | 21 | January | Valeri, Valeria, Maksim |
| Bulgaria | 24 | January | Ksenia, Kseniya |
| Bulgaria | 25 | January | Grigor, Grigorena |
| Bulgaria | 26 | January | Zhivka, Zhvko, Zoia |
