All Souls Unitarian Church is a Unitarian Universalist ("UU") church in Tulsa, Oklahoma. It is one of the largest UU congregations in the world. All Souls Unitarian Church was founded in 1921 by two leading Tulsans from families with Unitarian roots: Richard Lloyd Jones, the publisher of the Tulsa Tribune daily newspaper, whose father, Rev. Jenkin Lloyd Jones, had served as Secretary of the Western Unitarian Conference and founded All Souls Church in Chicago; and William Rea (W. R.) Holway, an engineer who was instrumental in the development of Tulsa's water resources.