The board of a nonprofit organization has tremendous responsibilities. Board members should ardently support the organization’s purpose, but zeal is not the only important quality. Diversity among board members is also critical for ensuring the organization can respond to challenges and adapt to changing conditions. In this context, “diversity” can have multiple meanings, such as cultural, economic, social and professional diversity. This article discusses the benefits of a well-rounded board of directors for nonprofit organizations and provides tips on promoting diversity in various forms.