Khaosan Road or Khao San Road (Thai: ถนนข้าวสาร) is a short street in central Bangkok, Thailand. It is in the Banglamphu area of (Phra Nakhon district) about 1 kilometre (0.62 mi) north of the Grand Palace and Wat Phra Kaew.

"Khaosan" translates as "milled rice", a reminder that in former times the street was a major Bangkok rice market. In the last 20 years, however, Khaosan Road has developed into a world famous "backpacker ghetto". It offers cheap accommodation, ranging from "mattress in a box" style hotels to reasonably priced 3-star hotels. In an essay on the backpacker culture of Khaosan Road, Susan Orlean called it "the place to disappear". It is also a base of travel: coaches leave daily for all major tourist destinations in Thailand, from Chiang Mai in the north to Ko Pha Ngan in the south, and there are many relatively inexpensive travel agents who can arrange visas and transportation to the neighbouring countries of Cambodia, Laos, Malaysia, and Vietnam.

Khaosan shops sell handcrafts, paintings, clothes, local fruits, unlicensed CDs, DVDs, a wide range of fake IDs, used books, plus many useful backpacker items.