Rotary International is a humanitarian service organization which brings together business and professional leaders in order to provide community service, promote integrity, and advance goodwill, peace, and understanding in the world. It is a non-political and non-religious organization. Membership is by invitation and based on various social factors. There are over 46,000 member clubs worldwide, with a membership of 1.4 million individuals, known as Rotarians.

Paul Percy Harris (April 19, 1868 – January 27, 1947) was a Chicago, Illinois, attorney. He founded the club that became the humanitarian organisation Rotary International in 1905.