Dadaocheng (大稻埕, Taiwanese: Tōa-tiū-tiâⁿ, literally "big rice drying-field") is an area in Taipei Basin and a historic section of Taipei City. It was an important trading port in the 19th century and is still a major historical tourist attraction and shopping area.

When the export of tea became important in northern Taiwan in the mid-19th century, many businessmen came to Dadanchen. The first store was Linyishun (林益順) in 1851. Two years later, many people moved from Bangka following a serious fight.

In the early 20th century, Dadaocheng was one of the most populous cities in Taiwan. In 1920, it became part of the newly-incorporated Taipei City.

The most famous street in Dadaocheng was named Dihua Street (迪化街) after World War II. There are many stores selling dried goods and snacks, especially before the Chinese New Year. Siahai Chenghuang Temple (霞海城隍廟) is also on Dihua Street. There is a festival to celebrate the birthday of Siahai Chenghuang (City God) on the 13th day of the 5th lunar month every year.

Tadaocheng is in Datong District.