Old Order Anabaptism is a collection of communities that have preserved the old ways of Anabaptist Christian religion and lifestyle.
Historically, an Old Order movement emerged in the second half of the 19th century among the Amish, Mennonites of South German and Swiss ancestry as well as the Schwarzenau Brethren and River Brethren in the United States and Canada. The Hutterites are additionally regarded as being Old Order Anabaptists, as they continued the practice of communal living. The Old Order movement led to several Old Order divisions from mainstream Anabaptist groups between 1845 and 1901. All Old Order Anabaptist groups that emerged after 1901 divided from established Old Order Anabaptist groups or were formed by people coming from different Old Order Anabaptist groups.