Georgian architecture is the name given in English-speaking countries to the classic architectural styles current between about 1720 and 1840, named after the four British monarchs named George. The Georgian styles succeeded the English Baroque of Sir Christopher Wren, Sir John Vanbrugh and Nicholas Hawksmoor.

The styles fall within the broad categories of Neo-Palladian, with its whimsical alternatives, Gothick and Chinoiserie that were the English-speaking world's equivalent of European Rococo styles, and the range of Neo-Classical modes associated with British architects Robert Adam, Sir William Chambers, James Wyatt, Henry Holland and Sir John Soane. Greek Revival was added to the design repertory, after ca 1800.

In the American colonies, the Neo-Palladian style is associated with 'Colonial Georgian' and the Neo-Classical styles broadly with 'Federal' building.

Georgian architecture was disseminated as much through the medium of engravings as it was through the direct experiences of the apprenticeship system. The Georgian styles were also assimilated into an architectural vernacular.

After ca 1840 a wider repertory of design alternatives, including Gothic Revival, enlarged the repertory, and the Georgian conventions were slowly abandoned.