Velupillai Suppiah Thurairajah (Tamil: வேலுப்பிள்ளை சுப்பையா துரைராஜா, romanized: Vēluppiḷḷai Cuppaiyā Turairājā; 8 August 1927 – 14 December 2011) was a Sri Lankan Tamil architect who designed many buildings in Sri Lanka and abroad.

[1][2] After returning to Ceylon Thurairajah joined the Public Works Department (PWD) in 1951 as a junior architect.

[1][5] He was editor and publisher of a quarterly journal called Architecture and Arts in Sri Lanka from 1975 to 1981.

[1][3] Thurairajah was one of the key organisers of the 4th International Tamil Research Conference held in Jaffna in 1974.

[1] Thurairajah produced the Tamil language film Kuthu Vilakku (Sacred Lamp) in 1972.