This article provides information on the International Sociological Association's World Congress of Sociologists to be held in Zurich, Switzerland from September 4 to September 9, 1950. This is in cooperation with the United Nations Educational, Scientific and Cultural Organization. Decision to hold this Congress was taken at a preliminary meeting in Oslo, Norway, in September 1949, at which the International Sociological Association was organized and in which representatives of twenty-two countries participated. The holding of the World Congress of Sociologists has been arranged to take place simultaneously with the meeting of the International Sociological Association. Whereas the program of the World Congress will be devoted primarily to scientific discussions of sociological problems of common concern, the meeting of the council and the executive committee of the International Sociological Association will be concerned in large part with the perfection of the organization established in Oslo, the election of an executive committee and officers to replace the provisional executive committee and officers elected at Oslo, the reports of committees and the consideration of a program. The general theme of the World Congress is Sociological Research in its Bearing on International relations. The aim of the Congress is to re-establish professional contacts among sociologists of various countries of the world and to explore and advance the potential contributions of sociology to the objectives of world understanding and world integration.