American colonial architecture includes several building design styles associated with the colonial period of the United States, including First Period English (late-medieval), French Colonial, Spanish Colonial, Dutch Colonial, German Colonial and Georgian Colonial. These styles are associated with the houses, churches and government buildings of the period between about 1600 through the 19th century.

Several relatively distinct regional styles of colonial architecture are recognized in the United States.

Building styles in the 13 colonies were influenced by techniques and styles from England, as well as traditions brought by settlers from other parts of Europe. In New England, 17th-century colonial houses were built primarily from wood, following styles found in the southeastern counties of England. Dutch Colonial structures, built primarily in the Hudson River Valley, Long Island, and northern New Jersey, reflected construction styles from Holland and Flanders and used stone and brick more extensively than buildings in New England. In Maryland, Virginia, and the Carolinas, a style called "Southern Colonial" is recognized, characterized by the hall and parlor and central-passage house types, which often had large chimneys projecting from the gable-ends of the house. Along the lower Delaware River, Swedish colonial settlers introduced the log cabin to America. A style sometimes called Pennsylvania colonial appeared later (after 1681) and incorporates Georgian architectural influences. A Pennsylvania Dutch style is recognized in parts of southeastern Pennsylvania that were settled by German immigrants in the 18th century.