Originally, Christmas was a religious festival celebrating the birth of Jesus Christ — a foundational holiday for Christians worldwide. 

Over centuries, many customs — like decorating evergreen trees, exchanging gifts, singing carols, and celebrating with feasts — became part of how Christmas is observed. 

In the 20th century and beyond, especially in increasingly pluralistic and global societies, Christmas has also taken on a secular or cultural dimension. Today, many people — including non-Christians — celebrate a “cultural Christmas,” embracing the festive, communal, and family-oriented aspects rather than its religious meaning.

Christians celebrate Christmas as the religious commemoration of the birth of Jesus Christ, marked by traditions such as Midnight Mass, nativity scenes, caroling, feasting, and gift-giving that symbolize Christ’s arrival and the spirit of generosity.

Christianity is the world’s largest religion, with an estimated 2.3–2.4 billion followers globally, and Christmas is widely celebrated in countries with the biggest Christian populations, including the United States, Brazil, Mexico, the Philippines, Nigeria, and the Democratic Republic of the Congo. Despite regional differences in customs, Christmas remains one of the most significant and unifying observances for Christians worldwide.

Muslims do not celebrate Christmas religiously because Islam honors Jesus (Isa) as a prophet, not as the divine Son of God whose birth is celebrated in Christian theology.

While Christmas is not recognized as an Islamic holiday, some Muslims may join secular aspects of the season—such as social gatherings, decorations, or gift exchanges—depending on local customs and cultural environments. However, religious practice remains centered on Islamic observances like Ramadan and Eid, rather than holidays tied to Christian beliefs.