Gas Street Basin is a historic canal basin in the heart of Birmingham, England, where the Worcester and Birmingham Canal meets the BCN Main Line.

Located off Broad Street between the Mailbox and Brindleyplace developments, it takes its name from being the first street in Birmingham to have gaslight.

The basin's most notable feature is the Worcester Bar, a narrow strip of land that once forced boatmen to tranship goods between the two canal companies, which refused to connect their waterways.

A stop lock was finally built in 1815, allowing boats to pass through while each company protected its water supply. The arched Bar Lock Footbridge visible today dates from 1988.

Once a busy commercial transport hub, the basin is now a popular starting point for canal walks toward Worcester, with traditional narrowboats moored alongside modern bars and restaurants.