The Beachy Amish Mennonites, also known as the Beachy Mennonites, are an Anabaptist group of churches in the Conservative Mennonite tradition that have Amish roots. Although they have retained the name "Amish" they are quite different from the Old Order Amish: they do not use horse and buggy for transportation, with a few exceptions they do not speak Pennsylvania Dutch anymore, nor do they have restrictions on technology except for radio and television. In the years 1946 to 1977 a majority of the Beachy Amish incorporated certain elements of revivalist practice, such as the preaching of the New Birth. The traditionalists who wanted to preserve the old Beachy Amish ways then withdrew and formed their own congregations. Today they are known as Midwest Beachy Amish Mennonites or Old Beachy Amish.

They form a loose association of churches without a central governing body; therefore, few common characteristics are shared by all Beachy congregations. Other Beachy congregations have organized into denominations, such as the Ambassadors Amish Mennonite Churches and the Maranatha Amish-Mennonite Churches. Some similarities include adhering to the Dordrecht Confession of Faith and practicing varying degrees of Anabaptist practice, such as nonresistance, separation from the state, and believer's baptism.