Tuanjiehu Park, Public park in Chaoyang District, China.

Tuanjiehu Park covers 13.8 hectares, including a 4.6-hectare lake, at 16 Tuanjiehu Nanli in Chaoyang District. A central island with three bridges holds the Wanxia Yixiu Pavilion, murals and stone carvings. The Half-Wall Corridor, about 100 metres long, runs along the northwest shore, and the Yunshan rockery faces the east gate.

The lake was dug in 1958 on the site of former brick kilns, using voluntary labour organised by the Chaoyang District government, which gave it the name Tuanjiehu, "Lake of Unity". Its western part became green space in 1974, and the park was built from 1981 and opened on 26 September 1986. In 2006 it became free of charge.

The name Tuanjiehu, "Lake of Unity", records that the lake was dug in 1958 by volunteers mobilised by the Chaoyang District government — workers, farmers, shop staff, students and soldiers. The park's buildings mix northern Chinese solidity with Jiangnan house style; the 1983 Banbi Changlang corridor, about 100 metres long, has a wall of inlaid lattice windows on its landward side and the two-storey Shuige Hexiang pavilion at its west end, whose wooden plaque was inscribed by Huang Miaozi.

Tuanjiehu Park has two entrances: the East Gate on Tuanjiehu Road and the West Gate on the East Third Ring Road. Three bridges lead from the shore to the central island, where paths circle a small hill and an open-air dance floor. The nearest metro is Hujialou station on lines 6 and 10.

The 诰赠额公碑, a white marble stele with a tortoise-shaped base and dragon-carved top, stands west of the Water Pavilion of Lotus Fragrance. Erected on the eighth day of the twelfth lunar month in 1709 by the minister Marhan for his father, it was moved here from Xiaozhuang Village in the mid-1980s and registered as a district cultural relic in 1986.