Thai cultural restoration of 1946–48 was the cultural and social policy of the government of Khuang Aphaiwong and Pridi Banomyong following Thailand's participation in World War II. It abolished the Thai cultural mandates that had been introduced between 1939 and 1942 by the government of Plaek Phibunsongkhram with the goal of modernising the country and abolishing traditional practices, which were seen as backwards. Khuang Aphaiwong, a conservative royalist, decided to order a restoration of traditional Thai culture to reverse the wartime policy of Phibunsongkhram. On 8 April 1948, a military coup d'état forced Khuang out of office and Phibunsongkhram assumed the premiership a second time. The cultural policy of Khuang and Pridi was canceled
The hallmarks of the cultural restoration, as promulgated in January 1946, were:
On 7 September 1946 the Thai government announced that the name of the country would revert to Siam, since the country did not only belong to the Thai race. The name reverted to Thailand in 1949.
After the coup d'état in 1947, in which Khuang was restored to power, the Supreme Council of State of Siam (Thai: อภิรัฐมนตรีสภา), which was dissolved during the Siamese revolution of 1932, was restored.