Lithuanian NameDays in December present a diverse array of names, with a significant number being distinctly Lithuanian in origin. While most names appear uniquely, a few like Zenonas, Dovydas, and Daugardas are celebrated on two different days within the month. The list seamlessly blends these traditional Lithuanian names with internationally recognized ones such as Barbora, Mikalojus, Liucija, and Tomas. Notable days include Christmas Eve and Christmas Day, featuring Adomas, Ieva, and Eugenija among others. This comprehensive compilation showcases a vibrant cultural tradition, honoring multiple individuals on each day of December.
| Country | Day | Month | Names |
 Lithuania | 1 | December | Algmina, Butigeidas, Eligijus, Natalija |
| Lithuania | 2 | December | Aurelija, Milmante, Paulina, Svirgailas |
| Lithuania | 3 | December | Atalija, Audinga, Gailintas, Ksaveras |
| Lithuania | 4 | December | Barbora, Liugaile, Vainotas |
| Lithuania | 5 | December | Eimintas, Geisvile, Grafas |
| Lithuania | 6 | December | Bilmantas, Mikalojus, Norvyde |
| Lithuania | 7 | December | Ambraziejus, Daugardas, Taute |
| Lithuania | 8 | December | Gedminte, Guntilda, Vaidginas, Zenonas |
| Lithuania | 9 | December | Gedene, Leokadija, Vakaris, Valerija |
| Lithuania | 10 | December | Eidimtas, Eularija, Ilma, Loreta |
| Lithuania | 11 | December | Aistis, Dovydas, Tautvalde |
| Lithuania | 12 | December | Dagmara, Gilmintas, Vaingede |
| Lithuania | 13 | December | Eivilte, Kastautas, Kastytis, Liucija, Otilija |
| Lithuania | 14 | December | Alfredas, Kintvile, Tarvainas |
| Lithuania | 15 | December | Gaudene, Gaudenis, Kristijona |
| Lithuania | 16 | December | Albina, Alina, Audrone, Vygaudas |
| Lithuania | 17 | December | Drovyde, Jolanta, Mantgailas, Olimpija |
| Lithuania | 18 | December | Eivile, Girdvilas, Gracijus |
| Lithuania | 19 | December | Darijus, Gerdvilas, Rimante |
| Lithuania | 20 | December | Daugardas, Grazvile, Teofilis |
| Lithuania | 21 | December | Girene, Honoratas, Norgaudas, Tomas |
| Lithuania | 22 | December | Dobile, Gedvydas, Ksavera, Zenonas |
| Lithuania | 23 | December | Mina, Veliuona, Viktorija, Vilbutas |
| Lithuania | 24 | December | Adomas, Girstautas, Ieva, Minvyde |
| Lithuania | 25 | December | Eugenija, Gene, Grazvydas, Sanrime |
| Lithuania | 26 | December | Gaudilas, Gindvile, Steponas |
| Lithuania | 27 | December | Dautaras, Fabijole, Gedvine |
| Lithuania | 28 | December | Ema, Kamile, Kantvilas, Vaidilute |
| Lithuania | 29 | December | Gaja, Gentvainas, Teofile |
| Lithuania | 30 | December | Dovydas, Gedrime, Grazvilas, Irmina, Sabinas |
| Lithuania | 31 | December | Gedgantas, Melanija, Mingaile, Silvestras |
