While sister-city agreements are established at the municipal level rather than the national level, prominent Indian cities maintain vital sister-city and twin-city relationships globally to foster cultural and economic ties. Notable examples include:
* **Mumbai:** Los Angeles (USA), Saint Petersburg (Russia), Stuttgart (Germany). * **New Delhi:** Chicago (USA), London (UK), Moscow (Russia). * **Ahmedabad:** Kyoto (Japan). * **Bengaluru:** San Francisco (USA), Chengdu (China). * **Chennai:** Denver (USA), Frankfurt (Germany).