The present study investigated the effect of imposing international financial sanctions on international risk sharing in developing countries during 2011-2022 using the propensity score matching (PSM) approach. International risk sharing refers to the processes in which countries with different income prospects share the risk of income fluctuations with one another by conducting commercial and financial transactions internationally. Therefore, their income and consumption no longer depend solely on domestic production, but also depend on the production of other countries (countries that own their assets). Since, international capital flows are the main tools for international risk sharing. Imposing international financial sanctions on a country reduces international capital flows and therefore reduces international risk sharing in that country. As the results showed, the impact of financial sanctions on international risk sharing has been negative and significant because the measure of the international risk sharing index in countries that were not subject to sanctions (control group) was 0.5877 and in countries that were subject to sanctions (treatment group) was 0.2431. Therefore, imposing international financial sanctions has reduced risk sharing in developing countries.