About Rotary Rotary is a worldwide organization of business and professional leaders that provides humanitarian service, encourages high ethical standards in all vocations, and helps build goodwill and peace in the world. Approximately 1.2 million Rotarians belong to more than 31,000 Rotary clubs located in 166 countries. Rotary Membership Members of a Rotary club are part of a diverse group of professional leaders working to address various community and international service needs and to promote peace and understanding throughout the world. If you would like to be considered for membership by a local Rotary club, complete a Prospective Member Contact Form on the Rotary International website. RI will forward your information to clubs in your area. For more information, please see the Rotary International website.