What countries involved in the Vietnam War?

Related question:

  • Who was in the Vietnam War?

  • Who fought in the Vietnam War?

The main countries involved in the Vietnam War were South Vietnam and North Vietnam. South Vietnam was backed by anti-communist countries and members of the South East Asia Treaty Organization (SEATO) which included the United States, South Korea, Australia, the Philippines, New Zealand, Thailand, Khmer Republic (later overthrown by the Khmer Rouge), Kingdom of Laos and Republic of China (Taiwan). North Vietnam was backed by communist forces which included Pathet Lao (Laotian Communist insurgents), Khmer Rouge  (Cambodian Communist insurgents), People’s Republic of China, the Soviet Union and North Korea.

There were 21 countries reported to get involved in the whole war in Vietnam (the First Indochina war from December 19, 1946 to August 1, 1954 and the Vietnam war (the Second Indochina war) from November 1, 1955 to April 30, 1975):

  • Democratic Republic of Vietnam (North Vietnam)
  • Republic of Vietnam ( aka South Vietnam (1955 – 1975) succeeded State of Vietnam (1949 – 1955) )
  • France
  • The United States
  • Laos (Pathet Lao)
  • Cambodia (Khmer Republic and the Khmer Rouge)
  • Soviet Union
  • People’s Republic of China
  • The United Kingdom
  • Australia
  • South Korea
  • New Zealand
  • Thailand
  • Philippines
  • Taiwan (Republic of China – cargo transport & military training support)
  • Cuba (doctors & military engineers engaging in widening the Ho Chi Minh trail)
  • North Korea (200 pilots served, at least 2 anti-aircraft artillery regiments and a fighter squadron were sent to defend Hanoi)
  • Canada (Non-combatant, support role)
  • Poland (Non-combatant, support role)
  • India (Non-combatant, support role)
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  • kimberly


  • kimberly

    the info is not as good

    • The Vietnam War

      Hi Kimberly,

      Thanks for your comment. May we know more about your opinion of the content and how we could make it better?

      Thanks. Have a nice day :)