Acting
Willem Visser 't Hooft
September 20, 1900July 4, 1985 (aged 84)
Willem Adolph (Wim) Visser 't Hooft, until 1917 Willem Adolph (Wim) 't Hooft, (Haarlem, 20 September 1900 – Geneva, 4 July 1985) was a Dutch theologian. He was the first Secretary-General of the World Council of Churches.