Cincinnati Street Railway (CSR) was the public transit operator in Cincinnati, Ohio, from 1859 to 1952.

The Cincinnati Consolidated Railway merged with CSR in 1880: Some of the city's streetcars, namely A9-10 PCC were sold to the Toronto Transit Commission upon abandonment.

The company began subway construction from 1920 to 1925, but the route was abandoned due to lack of money.

Some former CSR vehicles have been preserved in museums.

That museum acquired car 2227 from the Lake Shore Electric Railway (another museum) in 2009 and restored it, unveiling the restored car in 2013.