Tuen Mun Park, Urban park in Tuen Mun District, Hong Kong

Tuen Mun Park is a spacious urban green space situated between the Tuen Mun River and the town center, offering a range of recreational facilities. Visitors can find badminton and volleyball courts, a roller skating rink, a model boat pool, and a reptile house with indoor and outdoor displays.

The site originated from a land reclamation project in Castle Peak Bay during the 1970s and initially housed temporary settlements. The area was later transformed into a public recreational space for the growing community.

Retired residents gather in the park for Cantonese operatic singing (yuet kuk) with amplifiers, a practice that grew into more than a dozen performing groups and drew years of noise complaints from nearby housing estates. The 2019 protests against the Mandarin-singing dai ma led the District Council to scrap the self-entertainment zones that September.

The park lies between the Tuen Mun River and the town centre, beside Tuen Mun station (Exit B of the Tuen Ma line) and the Light Rail Town Centre stop, with a bus terminus nearby. The Reptile House opens 09:00–18:00, while the other facilities stay open around the clock. The roller skating rink sits by the southern entrance and the cycle path runs along the riverside corridor.

The Reptile House opened in 1999 as the first of its kind under the Leisure and Cultural Services Department, covering about 245 square metres on turf in the park's south. It holds 20 species in 43 live exhibits, plus seven reptile models, and drew 400,000 visitors a year before the inclusive playground opened.