The Dadiwan culture (5800–5400 BC) was a Neolithic culture located primarily in modern eastern area of Gansu and Shaanxi provinces of China. The culture takes its name from the earliest layer found at the type site at Dadiwan. The remains of millet and pigs were found in sites associated with the culture. The culture shared several similarities with the Cishan and Peiligang cultures.
The foundation of a large building, measuring 290 m² and 420 m² when including the outer courtyard, was discovered at Dadiwan. The building, known as F901, is described by Chinese archaeologists as a communal meeting hall. The building was built on an elevated rammed earth foundation, which was then layered with burnt clay.