Join Us

To register your organization to become a member of Sister Cities Interntional, please fill out the Membership Application found online here or by clicking the button below that says, "I am a representative of a city or organization looking to register." Once you have completed the application, please send the form to

If you are an individual interersted in becoming an individual member of Sister Cities International, please complete the form found online by clicking, "I am an individual looking to register." below.

We looking forward to having you join us in our mission to promote peace through mutual respect, understanding and cooperation -- one individual, one community at a time.

Take Action

This year marks a pivotal moment during which Sister Cities International is celebrating 60 years of peace through people. Get involved in this momentous year.
More Information


As the world becomes smaller, and connections online become more frequent than face-to-face interactions, multicultural understanding at the community level is more important than ever. Sister Cities International enables citizen diplomats in communities across the world to develop relationships with communities in other countries that are based on cultural understanding and mutual cooperation.Donate