In the Thammasat student uprising over 100,000 people protest in Thailand against the Thanom military government, 77 are killed and 857 are injured by soldiers.

The popular uprising of 14 October 1973 (Thai: เหตุการณ์ 14 ตุลา, RTGS: Hetkan Sip-Si Tula, lit. 'October 14 Event'; also วันมหาวิปโยค, RTGS: Wan Maha Wippayok, lit. 'Day of Great Sorrow') was a watershed event in Thailand's history. The uprising resulted in the end of the ruling military dictatorship of anti-communist Thanom Kittikachorn and altered the Thai political system. Notably, it highlighted the growing influence of Thai university students in politics.