Since the foundation of Christianity historically lies in Judaism, if there is a stance against the celebration of birthdays, it often mirrors the Jewish religious arguments. Few branches of Christianity, however, actually hold any official stance in regards to birthdays, be it in favour or against. Orthodox Christianity prefers the celebration of name days only, though it is not because of any active theologically-based prohibition or discouragement. Some Christian communities, especially in the Hispanosphere, celebrate both naming days and birthdays. Jehovah's Witnesses and some Sacred Name groups, among others, do not celebrate birthdays at all. They point to, for example, the birthday celebrations in the Bible for Pharaoh and for Herod, the latter being the occasion for the beheading of John the Baptist. Also, the origins, magic, and superstitions surrounding the pagan celebration of birthdays are also a some other reasons for some Christian groups rejecting birthday celebrations.

In the branches of Christianity where there is active discouragement or prohibition against birthdays, by default, this also affects their stance in regards to Christmas. After all, in its religiously presented form, Christmas is the commemoration of the birth of Jesus of Nazareth, that is, a birthday celebration for Jesus. Hence, Jehovah's Witnesses do not espouse the celebration of Christmas either, although additional theological arguments are also cited. Because of the very existence of Christmas as an integral celebration espoused by most branches of modern Christianity, it could be argued that this constitutes implicit acceptance of birthdays, contrary to this, it might put into question the legitimacy of Christmas
altogether.

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