This article provides an account of the upper echelons of Thailand’s capitalist class. Based on an analysis of the Forbes data on Thailand’s wealthiest for the period 2006–2019, it analyses the 30 families and groups that have dominated these rankings over this period. The article compares how the growth of this group’s wealth has outpaced other measures of how Thailand’s economy has grown over this period. The article also compares this Forbes-ranked group with the upper reaches of the Thai capitalist class in 1980, assessing wealth and investment between the most important capitalist groups in 1980 and those in the Forbes rankings for 2006–2019. It finds considerable consistency within this category, in both periods and over time.