Houhai (Chinese: 后海; pinyin: hòuhǎi; lit. 'Rear Lake') is a lake and its surrounding neighborhood in Xicheng District of central Beijing, China. Houhai is the largest of the three lakes, along with Qianhai 'Front Lake' and Xihai 'Western Lake', that comprise Shichahai, the collective name for the three northernmost lakes in central Beijing. Since the early 2000s, the hutong neighborhood around Houhai has become known for its nightlife as many residences along the lake shore have been converted into restaurants, bars, and cafes. The area is especially popular with foreign tourists visiting Beijing and is also often visited by the expatriate community and the younger generations of locals.
The Former Residence of Soong Ching-ling and Prince Gong Mansion are both located in the Houhai neighborhood.