While U.S. states do not typically hold official "Sister City" designations at the state level, Alabama's major cities maintain active international partnerships through Sister Cities International:
* **Birmingham:** Maintains numerous sister cities including Hitachi (Japan), Székesfehérvár (Hungary), and Rosh HaAyin (Israel). * **Mobile:** Partnered with cities including Ichihara (Japan), Havana (Cuba), and Veracruz (Mexico). * **Montgomery:** Maintains relationships with Pietrasanta (Italy) and Parintins (Brazil). * **Huntsville:** Partnered with Tainan (Taiwan) and maintains strong international ties due to its global aerospace industry.