This paper presents the findings of a study on the compaction and CBR characteristics of cement stabilized clay-quarry dust mixtures, utilising the BS Light compaction energy. The study encompasses laboratory experiments, statistical analysis, and the development of empirical models to describe the geotechnical behaviour of these mixtures. Various proportions of quarry dust (0-50%) and cement (0-10%) were studied. The soil mixtures were subjected to classification tests, compaction tests, and soaked CBR tests. The results of the study showed that the addition of quarry dust and cement to the soil can significantly improve its Atterberg limits, compaction characteristics, and CBR. The addition of 50% quarry dust and 10% cement reduced the liquid limit by about 41.8% and the plasticity index by about 42%. The maximum dry unit weight increased with cement and quarry dust content, while the optimum moisture content reduced with the same. The CBR of the natural soil increased from 6.3% to 130% at 50% quarry dust and 10% cement content. The empirical models developed in this study can be used to predict the compaction characteristics and CBR of cement stabilized soil-quarry dust mixtures.