Joseph Reed (1823 – 29 April 1890) was an English-born architect in Melbourne, Australia in the Victorian era. Considered the city's greatest, his prolific works include many of the city's most loved buildings and significant heritage listings. He decided to start a new career at the age of 30 in Australia, arriving in Melbourne in 1853, and very soon made a name for himself. The next year he won the design competition for the State Library of Victoria, the Geelong City Hall in 1855, and designed the Bank of New South Wales in Collins Street in 1856.
In 1859, botanist Ferdinand von Mueller described Reedia, a genus of flowering plants from south-western Australia, belonging to the family Cyperaceae, naming it in Reed's honour.
In 1862 he partnered with Frederick Barnes (1824–1884) the firm becoming Reed & Barnes.