Club Service focuses on strengthening fellowship and ensuring the smooth functioning of Rotary clubs. Individual Rotary clubs belong to Rotary International. Individual members, or Rotarians, belong to a club. The club is where most of Rotarians' meaningful service work is carried out. Clubs can be engaged not only in their communities, but also internationally. What Rotarians get out of Rotary depends largely on what they put into it.

Vocational Service involves club members serving others through their professions and aspiring to high ethical standards. Rotarians, as business leaders, share skills and expertise through their vocations, and they inspire others in the process. October is vocational service month.

Community Service is the opportunity Rotary clubs have to implement club projects and activities that improve life in the local community. When clubs complete effective service projects, they improve the community, bring people together, and reflect well on Rotary. When Rotary is viewed as a positive force in the community, its membership strengthens and grows, adding to the organization's ability to serve worldwide.

International Service encompasses efforts to expand Rotary’s humanitarian reach around the world and to promote world understanding and peace. It includes everything from contributing to PolioPlus to helping Rotary Youth Exchange students adjust to their host countries. Through the Rotary Volunteers Program, Rotarians and other professionals use their vocational skills and experience to contribute to humanitarian projects whenever help is needed. Rotarians worldwide join forces to work on a project in another country. Rotarian Action Groups (RAGs) are groups of Rotarians dedicated to common causes who conduct international service projects that further the Object of Rotary.

New Generations Service acknowledges the positive change implemented by youth and young adults involved in leadership development activities, community and international service, and exchange programs that enrich and foster world peace and cultural understanding. Programs include RYLA, Rotaract, Interact, and Rotary Youth Exchange.