13. Russia – 35%
In Russia, approximately 35% of married women report engaging in extramarital affairs. Cultural and historical factors, including periods of social upheaval and changing family dynamics, may influence these statistics. Many Russian women have strong social networks and career ambitions, creating both opportunity and temptation. High levels of social interaction, dating apps, and international exposure contribute to the prevalence of infidelity, making Russia a country where marital fidelity is sometimes compromised.