Shikumen, literally "stone gate", is an architectural style for residential buildings in Shanghai, China combining Western and Chinese elements that first appeared in the 1860s.

Shikumen houses are two or three-story townhouses, with the front yard protected by a high brick wall. Each residence is connected and arranged in straight alleys, known as a lòng-tang (弄堂), pronounced longdang in Shanghainese. The entrance to each alley is usually surmounted by a stylistic stone arch. The whole resembles terrace houses or townhouses commonly seen in Anglo-American countries, but distinguished by the tall, heavy brick wall in front of each house. The literal meaning "stone gate" refers to the strong gateway to each house.