As a sovereign nation, Iran itself does not hold sister city agreements, but its major municipalities maintain numerous twinnings worldwide to foster cultural and economic ties. Examples include:
* **Tehran:** Twinned with cities such as Seoul (South Korea), Beijing (China), Moscow (Russia), and Pretoria (South Africa). Notably, Seoul has a "Tehran Street" and Tehran has a "Seoul Street" to honor their connection. * **Isfahan:** Maintains sister city relationships with cultural capitals like Florence (Italy), St. Petersburg (Russia), and Kuala Lumpur (Malaysia). * **Shiraz:** Twinned with Weimar (Germany)—connecting the legacies of Hafez and Goethe—as well as Dushanbe (Tajikistan) and Nicosia (Cyprus).