This article examines the growing diversity of participation and achievement in the Olympics. A wide set of socioeconomic variables are correlated with medaling, particularly with respect to the Summer Games and women’s events. Host advantage is particularly acute in judged contests such as gymnastics. However, there is evidence that the influence of correlates, such as country size, per capita income, and membership in the communist bloc is declining over time as competition becomes increasingly diverse. These effects are less evident in the Winter Games, events in which significant capital investments are required, and judged contests.