Rotary is an organization of business and professional leaders united worldwide who provide humanitarian service, encourage high ethical standards in all vocations, and help build goodwill and peace in the world. In more than 160 countries worldwide, approximately 1.22 million Rotarians belong to more than 34,558 Rotary clubs.

Rotary club membership represents a cross-section of the community's business and professional men and women. The world's Rotary clubs meet weekly and are nonpolitical, nonreligious, and open to all cultures, races, and creeds. 

The main objective of Rotary is service — in the community, in the workplace, and throughout the world. Rotarians develop community service projects that address many of today's most critical issues, such as children at risk, poverty and hunger, the environment, illiteracy, and violence. They also support programs for youth, educational opportunities and international exchanges for students, teachers, and other professionals, and vocational and career development. The Rotary motto isService Above Self.

Although Rotary clubs develop autonomous service programs, all Rotarians worldwide are united in a campaign for the global eradication of polio. In the 1980s, Rotarians raised US$240 million to immunize the children of the world; 2005, Rotary's centenary year, the PolioPlus program contributed US$500 million to this cause. In addition, Rotary has provided an army of volunteers to promote and assist at national immunization days in polio-endemic countries around the world.