This study investigates how women influence charitable giving in a large, international voluntary service organization—Lions Clubs International (LCI). Data were collected from a survey of Lions clubs members in 14 countries to assess the impact of both micro- and macro-level factors on charitable giving. Probit and Tobit models are used to determine the probability of giving as well as the amount of money donated to the Lions Clubs International Foundation. Results indicate that belonging to a club where at least half of the members are female and where we see an increase in the percent growth in female membership in the respondent’s country are associated with both a greater likelihood of donating as well as giving more to this international service club. Findings from our study have direct implications for voluntary service organizations, particularly with regard to issues of organizational culture, as more service organizations recruit female members.