Swanston Street is a major thoroughfare in the Melbourne central business district, Victoria, Australia. It was laid out in 1837 as part of the original Hoddle Grid. The street vertically bisects Melbourne's city centre and is famous as the world's busiest tram corridor, for its heritage buildings and as a shopping strip.

The Hoddle Grid is the contemporary name given to the approximately 1-by-0.5-mile grid of streets that form the Melbourne central business district, Australia. Bounded by Flinders Street, Spring Street, La Trobe Street, and Spencer Street, it lies at an angle to the rest of the Melbourne suburban grid, and so is easily recognisable. It is named after the surveyor Robert Hoddle, who marked it out in 1837, establishing the first formal town plan. This grid of streets, laid out when there were only a few hundred settlers, became the nucleus for what is now Melbourne, a city of over five million people.