The Port of San Francisco currently has 10 sister port agreements with different ports all over the world. Sister port partnerships allow both parties to share policies and best practices on port planning and building, port management and operations, environmental protection measures, port safety and security, supply chain logistics, and cruise tourism. These partnerships also encourage more trade and business opportunities between the two ports by promoting the economic and commercial benefits of doing business with the sister port. Mostly, sister port relationships are a recognition of a good relationship between ports.

Flag	Sister Port	Country	Relations Began	Sister Port Date
	Osaka	Japan	1957	Thursday, Oct. 26, 1967
	Cork	Ireland	1964
	Keelung	Republic of China	1969	Tuesday, Sept. 15, 1992
	Haifa	Israel	1973
	Shanghai	China	1979	Monday, June 2, 1980
	Manila	Philippines	1961	Friday, Nov. 7, 2014
	Le Havre	France	1997
	Acapulco	Mexico	1999
	Melbourne	Australia
	Valparaiso	Chile