Becoming a part of our network is a commitment to the power of personal connection. Sister city relationships provide mutual benefit to communities far beyond traditional one-off exchanges—they reach every part of their community and improve quality of life.

If you are interested in joining our network that strives to bring communities together through citizen diplomacy, please fill out a membership application and send the form to info@sistercities.org.


Sister Cities International knows how to create and foster environments where relationships take seed and grow, in what’s maybe the most fertile soil of oil: curiousity about discovering the familiar in the unfamiliar.

-Masashi Oka, Executive Chairman, MUFG Americas Holdings