Church of Our Father was the first Unitarian church established in Atlanta, Georgia. The church was organized on March 27, 1883, by Rev. George Leonard Chaney, a Boston minister. Rev. Chaney initially held Sunday services in the Senate Chamber, Concordia Hall and the United States Courtroom. A church building was constructed at the corner of North Forsyth and Church Street and dedicated on April 23, 1884. The original building was demolished in 1900.

The church continued to serve Atlanta's liberal religious community for more than six decades. During that time the church name was changed several times. In 1918, Atlanta's Unitarians merged with the city's Universalist congregation. The combined congregation collapsed in 1951.

From its founding in 1825, the southern church expansion of the Boston-based American Unitarian Association (AUA) was hampered by the liberal Unitarian theology perceived in the south as religious heresy and the AUA'S adoption in 1837 of abolition advocacy. Prior to the Civil War, Unitarian churches were operating in Richmond, Virginia; Augusta and Savannah, Georgia; Mobile, Alabama; Louisville, Kentucky; Charleston, South Carolina and New Orleans, Louisiana. By the end of the Civil War, only the churches in Louisville, Charleston and New Orleans were active.

For years after the war, the AUA made no effort to regain or expand its southern churches. This non-engagement policy was reversed at the January 10, 1881 meeting of the directors of the AUA. The directors authorized Rev. John Heywood to conduct a tour of general missionary work in the south and requested that Rev. Enoch Powell perform missionary work specifically in Atlanta. Six months after Rev. Powell's initial Atlanta trip, the AUA directors allocated $1,000 for Atlanta missionary work and requested that Rev. Chaney lead that effort.

Years later Rev. Chaney noted, "They had sent a young minister to spy out the land, who promptly returned with the tidings of 'nothing doing' or to be done in Atlanta. I was then a member of the Executive Board of the Association and very zealous in sending other ministers into the field. So, for very shame, when I was asked to go myself, I could not refuse."

The resumption of missionary work in Atlanta coincided with the city's recovery from the Civil War. By the 1880s Atlanta was experiencing a building boom and the 1881 International Cotton Exposition brought favorable national attention to the city. More specifically to the Unitarian southern expansion effort, the idea of the exposition originated with a Bostonian Unitarian, Edward Atkinson. Atkinson subsequently served on the exposition's executive committee with Georgia Governor Colquitt and prominent citizens of the city. If not directly influencing the timing of the AUA's action, the relationships established by Atkinson were leveraged by the AUA directors in their Atlanta expansion strategy.

Upon the arrival of Rev. Powell in Atlanta in January 1881, the city newspaper reported that Unitarian services would be held in that state's senate chambers "by the courtesy of Governor Colquitt." In February 1882 when Rev. Chaney arrived in Atlanta, The Atlanta Constitution newspaper included in his biographical background that Rev. Chaney "has labored for the cause of industrial education with Mr. Edward Atkinson, of Boston."

In March 1883, approximately one year after Rev. Chaney first arrived in Atlanta, he announced "that the time had come for giving organized form to the interest we felt on the establishment of a new church in Atlanta." A church covenant and constitution were adopted and a committee appointed to identify property on which a new church building could be built. A month later, in April 1883, the committee reported that a lot had been secured with funds provided by the AUA. A church building was soon erected on the corner of Forsyth and Church Streets and dedicated on the evening of April 23, 1884.