Ratchadaphisek Road (Thai: ถนนรัชดาภิเษก, RTGS: Thanon Ratchadaphisek), also known as Bangkok Inner Ring Road (Thai: ถนนวงแหวนรอบในกรุงเทพมหานคร) is a major road in Bangkok, Thailand. Conceived in 1971 and opened in 1976, it connects earlier portions including Asok Montri, Wong Sawang and Charan Sanitwong Roads to form the city's inner ring road system. The road's name comes from the silver jubilee of the reign of King Bhumibol Adulyadej.

Ratchadaphisek Road crosses major traffic arteries such as Sukhumvit Road and the Si Rat Expressway.

The Ratchadaphisek district stretches from the junction with Rama IX Road to the one with Sutthisan Winitchai Road. It is a well-known entertainment area,^[1] including shopping complexes such as The Esplanade, cinema complexes such as Major Cineplex, a night bazaar, and night markets as well as love hotels.

Along with Royal City Avenue (RCA) and Patpong, portions of the district are designated as "entertainment zones" and thus allowed to remain open until 02:00.^[2]

Previously, in the 1980s, the same area was home to several large Thai restaurants in the form of garden restaurants. They were usually traditional Thai wooden houses with waiters wearing distinctive Thai costumes. The largest one was "Tamnak Thai" (ตำหนักไท, "Thai palace"). The restaurant was divided into four Thai houses, serving food from all four regions of Thailand. The waiters wore Thai costumes but skates for speedy service. It later closed down and the owner reopened it under the name Royal Dragon Restaurant on Bang Na–Trat Road in the early 1990s, which Guinness Book of World Records has recorded as the world's largest restaurant.^[3][4]

• The MRT Blue line runs on Ratchadaphisek Road in two long segments; an elevated section in Thonburi between Tha Phra and Bang O stations, and an underground section between Lat Phrao and Queen Sirikit National Convention Centre stations. Ratchadaphisek MRT station itself is in the northeast section of Ratchadaphisek Road, in the Din Daeng district.^[5]
• MRT Purple Line's Wong Sawang Station is located above the Wong Sawang Intersection.

• Ratchadaphisek MRT station
• Suan Lum Night Bazaar Ratchadaphisek
• The Esplanade (Bangkok)
• Bangkok/Ratchadaphisek travel guide from Wikivoyage

13°47′32″N 100°35′56″E / 13.7922°N 100.5989°E / 13.7922; 100.5989