The Shan Pui River (also known as Yuen Long Creek) (Chinese: 山貝河) is a river in Yuen Long, New Territories, Hong Kong. It has many tributaries, most of them starting from inside Tai Lam Country Park. It passes six villages and is joined by a few more streams. After flowing through Yuen Long Town, it continues northeast into Yuen Long Industrial Estate and Nam Sang Wai. The Kam Tin River flows into it on the way. It eventually empties into the Mai Po Nature Reserve and then Deep Bay.

Crocodile

The river was at the centre of attention in November 2003, when a 1.5 metre-long female crocodile was found in the river near Nam Sang Wai. It attracted many people to the village, all wanting to see the once-in-a-lifetime sight.

Many efforts were made to catch the crocodile, but it wasn't until over six months later, in June 2004, before it was caught. Afterwards, the AFCD and RTHK held a naming contest for the crocodile. On 12 August 2004, the crocodile was named Pui Pui (貝貝), a transliteration of the Chinese characters, meaning that it came from the Shan Pui River.

After it was caught, it was housed in Kadoorie Farm. It was moved to Hong Kong Wetland Park in August 2006.