A group of experts on population projections was convened in Thailand in late 1975. It was organized by the United Nations Economic and Social Commission for Asia and the Pacific. This report is the result of background papers used at the conference, reactions to the papers, and further writing. Chapter headings are: (1) Introduction; (2) The Role of Population Projections; (3) Organization for Making Population Projections; (4) Data Used in Making Projections; (5) Assumptions Used in Making Projections; (6) Computation Procedures Used in Making Projections; (7) Review and Revision of Population Projections; (8) Projections of Fertility; (9) Projections of Mortality; (10) The Use of Demographic Models for Projections; (11) The Use of Socio-Economic Variables in Making Projections; (12) Projections of Subnational Populations; (13) Long-Term Projections for Planning; and (14) Recommendations. (RH)