–         Honorary Secretary , The Philosophical Society of the Sudan , 1966-69 .

–         Member of the Executive Committee , Sudan National MAB Committee , 1977-83 .

–         Member of the Executive Committee of the Commission on Population Geography , International Geographical Union , 1982-86

–         Member of the Working Group on the Arid Land Management , International Geographical Union .

–         Member of the International Union for the Scientific Studies of Population .

–         Member of the International Union of Anthropological And Ethrological Sciences .