The Seventh-day Adventist Church is a Protestant Christian denomination distinguished by its observance of Saturday, the seventh day of the week in Christian and Jewish calendars, as the Sabbath, and by its emphasis on the imminent Second Coming (advent) of Jesus Christ. The Seventh-day Adventist Church corresponds to common Protestant Christian teachings, such as the Trinity and the infallibility of Scripture. Distinctive teachings include the unconscious state of the dead and the doctrine of an investigative judgment. The church is known for its emphasis on diet and health, its "holistic" understanding of the person, promotion of religious liberty, and its conservative principles and lifestyle.

The world church is governed by a General Conference, with smaller regions administered by divisions, union conferences, and local conferences. It currently has a worldwide baptized membership of over 20 million people, and 25 million adherents. It is ethnically and culturally diverse, and maintains a missionary presence in over 215 countries and territories. The church operates over 7,500 schools including over 100 post-secondary institutions, numerous hospitals, and publishing houses worldwide, as well as a humanitarian aid organization known as the (ADRA) Adventist Development and Relief Agency.