"Merry Christmas" in Spanish is "Feliz Navidad".
In Spanish-speaking countries, Christmas is known as Navidad and is celebrated with much fanfare. Families gather together to exchange gifts, enjoy a big meal, and sing traditional Christmas carols. People also decorate their homes with lights, tinsel, and other festive decorations. At the end of the night, they often call out "Feliz Navidad" to each other to wish everyone a Merry Christmas.