Yes, Christmas is celebrated in Japan, although it is a relatively recent holiday in the country. Christmas was introduced to Japan by Western missionaries in the 16th century, but it wasn't until the 19th century that it started to become a more widely celebrated holiday. Today, Christmas is a popular holiday in Japan, although it is often celebrated in a different way than in other countries. Christmas decorations and Christmas trees are common in Japan, and people often exchange gifts on Christmas Eve or Christmas Day. However, Christmas is not a public holiday in Japan, and most businesses and schools remain open.