AbstractDeveloping nations which hold to a concept of private ownership or administration of land require survey and cadastral systems capable of supporting modern definition and information needs. Fiji is such a nation. This paper outlines the procedures followed in the definition and adjustment of the 1986 Fiji Geodetic Datum drawing particular attention to the need to balance such factors as cost, use of historical triangulation data, use of Doppler and other modern survey data, and the desire to provide the foundation for a multipurpose, integrated, survey and cadastral system suited to both present and future land tenure and land information needs. It describes the practical problems addressed in the Datum definition, comments upon the merging of the various data sets, and describes the final adjustment.