Castle Peak Wholesale Fish Market, Fish wholesale market in Tuen Mun, Hong Kong.

Castle Peak Wholesale Fish Market is a single-storey wholesale market covering about 5,000 square metres on the west bank of the Tuen Mun Typhoon Shelter, northeast of Yuet Wu Villa. It occupies part of the Tuen Mun Area 44 joint-user complex at 101 Wu Shan Road and is run by the Hong Kong Fish Marketing Organization, mainly for the wholesale sale of chilled fresh sea fish.

The market relocated to its current location in 2011, marking a turning point in Hong Kong's fish distribution network. This move enabled a more modern and efficient trading infrastructure to serve the city's growing demand.

The market is run by the Hong Kong Fish Marketing Organization under the Marine Fish (Marketing) Ordinance, Chapter 291. Its Chinese name, Castle Peak Wholesale Fish Market, is also known as Tuen Mun Fish Market, tying it to the district rather than Kowloon Bay. Trading concentrates on chilled fresh sea fish, sold wholesale from the single-storey hall.

The market opens early in the morning at 3 AM and closes by early afternoon, so visiting in the early hours works best. Visitors should be prepared for ample parking and an active, busy trading environment.

The market moved on 3 June 2011 from its old site at 12 Sam Shing Street, near Sam Shing Hui on the northeast shore of the Tuen Mun typhoon shelter, to a single-storey building at 101 Wu Shan Road in Area 44. It covers about 5,000 square metres and is run by the Fish Marketing Organization.