Tri Phet Road (Thai: ถนนตรีเพชร, RTGS: Thanon Tri Phet, pronounced [tʰā.nǒn trīː pʰét]) is a road in inner Bangkok, it is located in Wang Burapha Phirom Subdistrict, Phra Nakhon District, regarded as one of the memorials to the children of King Chulalongkorn (Rama V) who died as a child as same as Sirirat Hospital, or Uruphong Intersection etc.
It was built by royal command of King Chulalongkorn in memory of Prince Tribejrutama Dhamrong, his son born to Queen Saovabha Phongsri.
Later in the year 1898, King Chulalongkorn has given the extension to reach the future the foot of the Memorial Bridge, where Chak Phet Road runs through like today.
In the 150th anniversary of Rattanakosin in the year 1932, King Prajadhipok (Rama VII) ordered the celebration of city and the construction of a Memorial Bridge including King Phutthayotfa Chulalok (Rama I) Statue that are directly on the end of the Tri Phet Road.
Although it is a short road, it runs through many important places, for example Nightingale–Olympic Department Store, The Old Siam Plaza, Wat Ratchaburana, and the Long Corridor of Suankularb Wittayalai School with Poh-Chang Academy of Arts etc.