Pak Phraek (, ) is a tambon (subdistrict) of Mueang Kanchanaburi district, Kanchanaburi province.
Pak Phraek, whose name means "confluence" or "water intersection", is the point where the Khwae Yai and the Khwae Noi rivers meet to form the Mae Klong river, which flows southward to the Gulf of Thailand in Samut Songkhram province.
Pak Phraek is a historic site. In 1785 it served as a route for the Burmese army during the Nine Armies' Wars. Later it became the location of Kanchanaburi's old downtown. Chinese and Annamese traders settled here for commerce during the reign of King Rama III around 1831. In modern history the area is also closely tied to World War II. The rise of this riverside commercial district is associated with many national figures, such as Boonpong Sirivejjabhandu, a World War II hero whose house and pharmacy still remain on Pak Phraek Walking Street. This street was also the first concrete road built in Kanchanaburi province.
Today many of the buildings along Pak Phraek Walking Street are preserved as historic structures. They display both Eastern and Western architectural styles, with origins dating back to the reign of King Rama IV.
Pak Phraek is administered by two government bodies are Kanchanaburi Town Municipality and Pak Phraek Town Municipality.
It is further divided into 13 administrative mubans (villages) and six communities.
The other six communities.
As of December 9, 2024, the subdistrict has a total population of 23,904.