Pronatal norms exist in various countries to varying degrees. Depending on the strength of pronatalism, adults who remain childless can experience negative sanctions that could affect their happiness and life satisfaction. We test these ideas on childless respondents from 36 nations in two waves of the World Values Survey (1994-1999 and 1999-2004). Childless adults are unhappier and less satisfied if they live in highly pronatalist nations than in other nations. The negative relationship between childlessness and life satisfaction is stronger for childless people in strongly pronatalist nations that have below-replacement fertility or low-to-medium scores on the Human Development Index than in strongly pronatalist nations with at- or above-replacement fertility or high scores on the Human Development Index. The findings show the importance of taking national-level contextual factors into account in understanding the mental well-being of childless people.