牛池灣
Choi Wan Estate () is a public housing estate in Ngau Chi Wan, Wong Tai Sin District, Kowloon, Hong Kong, located between Ngau Chi Wan Village and Jordan Valley and the foot of Fei Ngo Shan. The estate is divided into Choi Wan (I) Estate () and Choi Wan (II) Estate (), and has a total of 21 blocks. It is one of the largest public housing estates in Wong Tai Sin District.