Flags of Vietnam

Socialist Republic of Vietnam

Who & why: North Vietnamese forces take Saigon on 30 April 1975, ending the Vietnam War; a National Assembly formally reunifies the country as the Socialist Republic of Vietnam on 2 July 1976, under Communist Party rule. Vietnam later normalizes relations with the United States (1995) and undertakes sweeping market reforms (đổi mới) while remaining a one-party state.

What it represents: the same gold-star-on-red flag flown by the Democratic Republic of Vietnam since 1945, now extended over the entire reunified country.

Democratic Republic of Vietnam (North) / Republic of Vietnam (South)

Who & why: the 1954 Geneva Accords, ending the First Indochina War, partition the country at the 17th parallel pending elections that are never held. Ho Chi Minh's communist-led Democratic Republic governs the North from Hanoi; the anti-communist, US-backed Republic of Vietnam governs the South from Saigon under Ngô Ñình Diệm and later a succession of military governments. Escalating insurgency and direct US military involvement from 1965 turn the standoff into the Vietnam War, which kills an estimated two million or more Vietnamese before the North's final 1975 offensive takes Saigon.

What it represents: the North's gold-star-on-red flag, first seen in the Cochinchina uprising of 23 November 1940 and adopted by decree on 5 September 1945, was slightly modified on 30 November 1955 (smaller star, straighter rays; FOTW also gives 30 September) and became the unified flag on 2 July 1976. The South's yellow field with three red stripes was adopted for the State of Vietnam by ordinance on 2 June 1948 and by Bảo Đại in 1949, and continues among overseas Vietnamese communities. The National Liberation Front adopted a flag modelled on the North's on 20 December 1960.

Democratic Republic of Vietnam (declared) / French Indochina War

Who & why: Ho Chi Minh proclaims Vietnamese independence in Hanoi on 2 September 1945, days after Japan's surrender. France refuses to accept the loss of its colony and, after a brief standoff, the First Indochina War breaks out in December 1946. France sets up a rival, nominally independent State of Vietnam under former emperor Bảo Đại in 1949 to compete for legitimacy. France's decisive defeat at Điện Biên Phủ in May 1954 forces it to withdraw, and the July 1954 Geneva Accords partition the country at the 17th parallel.

What it represents: Wikipedia says the Viet Minh proclaimed the gold-star-on-red flag a national flag at Tân Trào on 17 August 1945, the Democratic Republic was proclaimed in Hanoi on 2 September 1945, Ho Chi Minh signed a decree adopting the flag on 5 September, and the National Assembly voted for it on 2 March 1946. The State of Vietnam's yellow flag with three red bands followed by ordinance on 2 June 1948. The Empire of Vietnam, under Japanese occupation, had adopted the Quẻ Ly flag in June 1945.

French Indochina

Who & why: France formally unites its Vietnamese possessions (Tonkin, Annam, Cochinchina) with Cambodia into the Indochinese Union in October 1887, adding Laos in 1893; colonial rule spans a formal protectorate over most of Vietnam and direct control of the Cochinchina colony in the south. After France's 1940 defeat by Germany, Japan occupies Indochina while leaving Vichy French administration nominally in place, before seizing direct control in a March 1945 coup that briefly restores Vietnamese emperor Bảo Đại as a Japanese client just months before Japan's own surrender.

What it represents: the plain French tricolor is shown. Wikipedia says the French flag, a yellow protectorate flag with the tricolour in the canton, and the Long tinh banner all flew in Annam and Tonkin, and Flags of the World dates the Annam dragon flag to 1920-1945 and the protectorate flag to 1923-1945; the sources read do not document French tricolour use across the Union (formed 1887) or a Union flag.

Nguyễn dynasty (independent empire)

Who & why: Nguyễn Ánh unifies the country after decades of civil war, founding the Nguyễn dynasty and taking the name Gia Long in 1802 — the last Vietnamese imperial dynasty and the first to rule the full length of the country from Huế. French military pressure builds through the mid-1800s, and a series of forced treaties from the 1860s onward progressively strip the empire of sovereignty, culminating in the 1884 Treaty of Huế that establishes the French protectorate completed by 1887.

What it represents: Wikipedia's Long tinh flag article says the yellow flag with a vertical red stripe was designed by Emperor Khai Dinh (reigned 1916-25) and became the national flag only in the final years of the Nguyen dynasty (to mid-1945). Flags of the World, repeating an unsourced chronology, dates a yellow flag with a red circle to 1802-1885. The yellow flag with a red bar drawn here is therefore not documented for the dynasty's early decades.

Independent Vietnamese dynasties

Who & why: Ngô Quyền's 938 victory over a Southern Han fleet at the Bạch Đằng River ends over a thousand years of intermittent Chinese imperial administration and opens nearly nine centuries of independent Vietnamese dynastic rule — the Lý, Trần, later Lê, and others — interrupted only briefly by renewed Chinese occupation (1407–1427) and periods of civil war between rival lords, before the Nguyễn finally reunify the country in 1802.

What it represents: no single flag is securely documented across this long dynastic span; imperial banners and dragon standards changed with each ruling house, so this entry is shown honestly blank rather than inventing one continuous symbol.

Chinese imperial rule (Bắc thuộc)

Who & why: successive Chinese dynasties — beginning with Han conquest in 111 BCE and continuing, with a notable interruption during the Trưng sisters' rebellion (40–43 CE), through the Tang — administer the Red River Delta as a directly ruled set of commanderies for over a thousand years, a period Vietnamese history remembers as Bắc thuộc ("Northern domination"). Repeated rebellions gradually weaken central control, and the Tang dynasty's own collapse creates the opening Ngô Quyền exploits in 938.

What it represents: the Chinese imperial dragon standard is shown as a placeholder. The sources read (Wikipedia, Flags of the World) do not describe a Chinese flag over the commanderies; Wikipedia mentions only the yellow-turbaned royal standards of the Trung sisters' AD 40 revolt.

Đông Sơn culture & the Văn Lang / Âu Lạc kingdoms

Who & why: from around 1000 BCE, the Red River Delta's Bronze Age Đông Sơn culture — known above all for its large, elaborately cast bronze drums, found across northern Vietnam and traded widely through Southeast Asia — is traditionally associated with the kingdom of Văn Lang, whose precise historicity and dates are still debated by historians but which anchors Vietnam's own national founding narrative. Around 257 BCE the more securely documented kingdom of Âu Lạc, under An Dương Vương and centered on the fortified citadel of Cổ Loa, absorbs Văn Lang; Âu Lạc itself falls to the Nam Việt warlord Triệu Đà around 179 BCE, and Nam Việt in turn falls to Han China in 111 BCE, opening the long Chinese imperial rule that follows.

What it represents: no flag or comparable state banner survives from this era, and none is invented here — shown honestly blank. The bronze drums themselves, cast with concentric bands of birds, boats, and geometric suns, are the era's real and celebrated material legacy.

World context: this span runs alongside the Western Zhou and Spring and Autumn periods in China, the height of the Assyrian empire and the founding of Rome (traditionally 753 BCE) in the Mediterranean world, and, toward its end, the unification of China under the Qin and early Han dynasties whose southward expansion would directly end Âu Lạc's independence.