Sham Shui Po District (Chinese: 深水埗區) is one of 18 districts of Hong Kong. It covers the Shek Kip Mei, Sham Shui Po, Cheung Sha Wan, Lai Chi Kok and Yau Yat Chuen areas of New Kowloon, and Stonecutter's Island of Kowloon. It is the poorest district in Hong Kong, with a predominantly working-class population of 365,540 and the lowest median household income, and the fourth least educated residents.

Sham Shui Po District administers:

Apliu Street in Sham Shui Po is a well known place where electronics enthusiasts go. Here, one will find almost anything they need for their electronic projects. Aside from electronic items, one may also find the power tools, electrical devices, mobile phones and accessories they need. Even car accessories shops can be found.

Sham Shui Po was already a densely populated district in 1950s and 1960s. It is heavily poverty-stricken, having the lowest median monthly domestic household income among the 18 districts. It has the highest percentage of elderly over 65 years. The percentage of new immigrants is also very high.

Sham Shui Po, or Shamshuipo, is an area of Sham Shui Po District, Hong Kong, situated in the northwestern part of the Kowloon Peninsula, north of Tai Kok Tsui, east of Cheung Sha Wan and south of Shek Kip Mei. Sham Shui Po is known for its street market for electronic devices.

Sham Shui Po in Cantonese means "Deep Water Pier". Its water was deeper than the beach of Cheung Sha Wan to the northwest. It is close to the former peninsula of Tai Kok Tsui. The low ridge of the peninsula ends in Sham Shui Po.

In the first stage, the town of Sham Shui Po was bounded by Yen Chow Street, Tung Chau Street, Wong Chuk Street and Apliu Street. Part of the town was on reclamation. The town was surrounded by villages of Un Chau, Tin Liu and Tong Mei. A nullah along Nam Cheong Street was constructed to drain the water of rivers north and east (which explains the street's wideness). The town was closed to Cosmopolitan Dock on the outer shore of Tai Kok Tsui.

Under Japanese occupation, a concentration camp was maintained here for most of the duration of the Second World War. An account of life by a British POW has been published as The Hard Way: Surviving Shamshuipo POW Camp 1941-45 by Victor Stanley Ebbage (Spellmount, 2011).