* San Francisco, United States (since 1957)* São Paulo, Brazil (since 1969)* Chicago, United States (since 1973)* Shanghai, China (since 1974)* Melbourne, Australia (since 1978)* Saint Petersburg, Russia (since 1979)* Milan, Italy (since 1981)* Hamburg, Germany (since 1989)* Kanpur, India (since 1998)Osaka also has the following friendship and cooperation cities.
==Zunanje povezave==* Curtiss-Wright X-19 Background