There are quite a few Christian religions that do not celebrate Easter. These religions include the Jehovah's Witnesses, the Church of Christ, and the Seventh-day Adventist Church. Each of these churches celebrates different holidays as their most important religious celebrations. For the Jehovah's Witnesses, it is the Memorial of Christ's Death. For the Church of Christ, it is Passover. And for Seventh-Day Adventists, it is Sabbatarianism (the Sabbath).