The Rochester-Genesee Regional Transportation Authority (RGRTA) is a New York State public-benefit corporation which provides transportation services in the eight-county area in and around Rochester, New York. Currently, RGRTA oversees the daily operation of eleven subsidiaries under the parent company of the RGRTA, including paratransit services. In 2023, the combined system of eleven subsidiaries had a ridership of 9,712,300, or about 34,900 per weekday as of the fourth quarter of 2023.

The Rochester Railway Company operated a streetcar transit system throughout the city of Rochester from 1890 until its acquisition by Rochester Transit Corp. in 1938. Formed by a group of Pittsburgh investors, the Rochester Railway Company purchased the Rochester City & Brighton Railroad in 1890, followed by a lease of the Rochester Electric Railway in 1894. The Rochester and Suburban Railway was leased in 1905, extending the system's reach to Irondequoit and Sea Breeze. Rochester Railways was acquired by the Mohawk Valley Company, a subsidiary of the New York Central Railroad set up to take control of electric railways in its territory. In 1909 the holdings of the Mohawk Valley Company were consolidated as the New York State Railways.