Albert Cook Outler (November 17, 1908 – September 1, 1989) was a 20th-century AmericanMethodist theologian and philosopher. Outler is generally considered to be one of the most important Wesley scholars in the history of the Church as well as the first real United Methodist theologian. He was also a key figure in the 20th century ecumenical movement.
Outler is widely credited with being the first to recognize John Wesley's method for theologizing, via what Outler referred to as the Wesleyan Quadrilateral: Scripture, Church Tradition, Reason, and Personal Experience. This understanding of Wesleyan theology is prevalent throughout Methodism, particularly in The United Methodist Church. Using this model, Outler was a key figure in organizing the theological statement put forth by The United Methodist Church after its formation in 1968.