The Osler Mennonite Church had its beginning on March 24, 1928. The church was then called Zoar Gemeinde Zu Osler. On September 9, 1928 the church was dedicated by Elder David Toews. The Zoar Gemeinde Zu Osler became the Rosenorter Gemeinde Zu Osler in 1931.

Later, in 1954, it became the United Mennonite Church of Osler. On December 28, 1962 another name change took place when it was changed to Osler Mennonite Church, a part of the General Conference Mennonite Church. On October 10, 1996 the church was incorporated and adopted the legal name Osler Mennonite Church Inc. under which it is registered.