Polk Street (also sometimes referred to by its German name, Polkstrasse) is a street in San Francisco, California, that travels northward from Market Street to Beach Street and is one of the main thoroughfares of the Polk Gulch neighborhood traversing through the Tenderloin, Nob Hill, and Russian Hill neighborhoods. The street takes its name from former U.S. President James K. Polk.
The street also has bike lanes, which were approved in 2002. San Francisco bike route 25 runs along Polk Street, and is the only North-South route suitable for casual bicycle travel within at least a mile in either direction. There is an ongoing debate on whether to increase the level of these improvements.