Fax: (630) 571-8890 Tele: (630) 571-5466 300W, 22nd street, OAK Brook, 60523-8842 USA website: wwwlionsclubs.org. Office Hours: 8 am to 4.30 pm

The Lions Clubs International Headquarters building, located in Oak Brook, illinois, USA is home to the world's largest service club organization, There are 300 employees working in 44 departments, organized under 12 Divisions to serve the programming and administrative needs of the Associations worldwide membership working together, between the staff and International Board of Directors to ensure that quality service is continuously provided to members.

In addition of offices, meeting rooms and production facilities, beautifully designed 150,000 square foot building offers, several historical and recondition displays for visitors to view. The office is open to Lions and the general public form 8-00 AM to 4-30 PM, Monday to Friday.