Siriraj (also spelled Siri Rat, Thai: ศิริราช) is one of the 154 sub-districts (kwaeng) of Bangkok, Thailand, covering the area around Siriraj Hospital, located on the southern rim of Khlong (canal) Bangkok Noi mouth to the western bank of the Chao Phraya River in Bangkok Noi district. It is also named for the road intersection of Thanon (Road) Arun Amarin and Thanon Phran Nok at the front of the hospital.
The area is also included into Rattanakosin Island historical area as it used to be Thonburi downtown (formerly capital of Thailand around 1768-1782). The major features in Siriraj are Royal Siriraj Hospital, the oldest government hospital and the largest medical center of Thailand, Wang Lang ladies market and Wat Rakhang, Temple of the Bell, the major temple with many exquisite fine arts. Outside the area just the northern rim of Khlong Bangkok Noi, there is also the National Museum of Royal Barge, where 8 important barges are preserved and displayed.
Wang Lang or Siriraj Pier is the main pier for the area, consists of the ferry crossing-river boat service to Tha Chang and Tha Phrachan piers to the Grand Palace, Wat Phra Kaew and Sanam Luang; and the Chao Phraya Express Boat Service to northern suburb at Nonthaburi or Bangkok downtown at Si Lom and Sathon. There is also another RotFai (Railway) Pier at the former Thonburi Railway Station for river-crossing boat to Tha Phrachan Pier and the local line of the Chao Phraya Express Boat.
There are several bus, public Tuk-tuk or Songthaews (public passenger pick-up vehicles) services to Taling Chan, Bangkok Yai, Charansanitwong Road and Pinklao neighbourhood, and also the river-crossing bus lines through Phra Pinklao Bridge to Sanam Luang and Ratchadamnoen Road at another river side.
There is also Bangkok Noi Railway Station (or the former Thonburi railway station), which used to be the southern railway terminal, and became the terminal station of the Death Railway to Kanchanaburi built by Japan during World War II.