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Flags of San Marino

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Flags of San Marino

San Marino calls itself the oldest surviving sovereign state and the oldest constitutional republic in the world — a claim resting on a founding tradition that reaches back to 301 CE, a body of statutes from 1600 still partly in force, and an unbroken record of never once being conquered, through the Renaissance, Napoleon, Italian unification, and two World Wars.

Only three eras mark this page, because San Marino's political system barely changed across seventeen centuries of self-government; its flag's white-over-light-blue bicolor and three-towers coat of arms simply became more formally fixed over time, not fundamentally different.

Scope of this page: the Republic of San Marino on Mount Titano, traditionally c. 301 CE to present, three phases. San Marino has governed itself continuously throughout its history — no internal partition, no foreign annexation ever completed. Part of a larger atlas — see the map and linked pages at the bottom.

One mountain, never conquered

San Marino's own real border around Mount Titano, traced whole — the world's smallest and one of its oldest surviving republics has governed the same small patch of the Apennines continuously since its traditional 301 CE founding. Press play, or drag the slider, to watch the flag settle from an undocumented tradition into its modern fixed form.

This is a single-region page. There is no internal-partition history to map: San Marino has never been conquered, never split, and never lost the territory it traditionally held from its founding. What changes across the three eras below is only how formally its flag and arms were fixed, not who ruled or how much ground they held.
c. 301
ITALY (Emilia-Romagna) ITALY (Marche) SAN MARINO
Traditional founding to the early commune

Real traced border on Mount Titano, no internal partition — see the rule box above for why.

How we know this. 3 of 3 eras on this page carry an evidence panel (1 attested, 2 not yet checked). Only the ones marked attested are confirmed by the sources named under them; where sources disagree or a claim could not be confirmed, the panel says so.
white over light blue with the three towers of Mount Titano, arms fixed 1862
1862 – present

Republic of San Marino (modern arms)

Republic, treaty-recognizedNo single ruler documented (Captains Regent)Roman Catholic (traditional, no state church)
Migration & conquest:Occupied by: Germany (Sept. 1944)Immigration: Italian refugees fleeing WWII bombing (1944)

Who & why: as the Kingdom of Italy forms around it, San Marino secures its continued independence through a friendship treaty with Italy in 1862 (renewed and updated since), the same year it fixes the current form of its state arms — the three towers of Guaita, Cesta, and Montale atop Mount Titano — on the flag. The republic stays neutral through the First World War, is briefly occupied by retreating German forces for about two weeks in September 1944 despite its declared neutrality, and continues today as a functioning parliamentary republic and a founding-era relic that outlasted every empire that ever bordered it.

What it represents: white over light blue with the national arms at the centre: three feathered towers on three peaks between laurel and oak, under a crown, above the word LIBERTAS. The government of San Marino dates the flag and the final form of the arms to 6 April 1862, with the colours taken from the 14th-century arms of the three peaks of Titano. Wikipedia gives white as peace and light blue as liberty; the snow-and-sky meanings once given here are not in the sources read.

Attestedhow we know this

The Government of San Marino (Conoscere San Marino): the flag is white over blue with the national arms at the centre, adopted on 6 April 1862 and slightly modified in 2011, and the arms took their final form on 6 April 1862 after the treaties with the Kingdom of Italy, the colours being drawn from the 14th-century arms of the three peaks of Titano. Flags of the World: flag adopted 6 April 1862 by decree of the Supreme Council (Southworth), arms in present form from that date (Pedersen). Wikipedia: the decree of 6 April 1862 standardised the coat of arms but did not mention the flag; a white-azure bicolour is first recorded in 1829.

Not established: Wikipedia's infobox gives the flag as early 1800s, and says the 1862 decree concerned the arms; the page's snow and sky meanings are not in the sources, which give peace for white and liberty for light blue (Wikipedia).

Paint guide
Proportions3:4 (state flag with arms); civil flag flown without arms at 3:4 also.
LayoutHorizontal bicolor, white over light blue, state arms (three grey towers on a green mount, crowned, with wreath and motto ribbon, simplified here) centered.
White#FFFFFF
Light blue#4AB4E6
Mount, green#4A7C3A
Towers, grey#8A8A8A
plain white-over-blue bicolor, no fixed arms yet
1600 – 1862

Republic under the 1600 Statutes

Self-governing republicNo single ruler documented (Captains Regent)Roman Catholic (traditional, no state church)

Who & why: in 1600, San Marino codifies its Leges Statutae Republicae Sancti Marini, a written constitution — among the oldest still partly in force anywhere in the world — formalizing a self-governing republic ruled by two Captains Regent elected every six months. The republic weathers the Renaissance-era ambitions of neighboring powers, and when Napoleon's armies sweep through Italy in the 1790s, he personally declines to annex San Marino, reportedly offering to expand its territory instead; San Marino, wary of the offer's strings, politely refuses.

What it represents: the sources read do not mention the 1600 Statutes and do not show a white-over-blue bicolour before 1797: the government of San Marino says the first flag, of 1465, was an orange, white and violet tricolour, and that a white and blue cockade adopted in 1797 started the change to the colours of 1862. Wikipedia records a white-azure bicolour first in 1829, and unstandardised white-blue flags until 2011. The plain bicolour drawn here is therefore only secure from the early 19th century.

Not yet checked against sourceshow we know this

The Government of San Marino: the first flag, adopted in 1465, was a horizontal orange, white and violet tricolour with the arms, and the white and blue cockade of 1797 started the change that led to the colours of 1862. Wikipedia: first record of a white-azure bicolour in 1829, a white and blue cockade in 1797, unstandardised white-blue flags until 2011. Flags of the World (historical flags): the old republic flag attested in 1465 was used until about 1797, a flag like the modern one from 1797.

Not established: None of the sources mentions the 1600 Statutes, and they date the white-over-blue bicolour from 1797, not 1600, so the card's bicolour before 1797 is contradicted by the 1465 tricolour.

Paint guide
ProportionsNo fixed ratio recorded for this period; shown at 3:2.
LayoutHorizontal bicolor, white over light blue, no arms.
White#FFFFFF
Light blue#4AB4E6
traditional white-over-blue colors; earliest use undocumented before the medieval period
c. 301 – 1600

Traditional founding to the early commune

Self-governing republicMarinus (traditional founder)Roman Catholic (traditional, founded as a Christian refuge)
Migration & conquest:Immigration: Marinus & Christian refugees (traditional, 301 CE)

Who & why: tradition holds that Marinus, a Christian stonemason from Rab fleeing the Diocletianic persecutions, founds a small community of fellow Christians on Mount Titano in 301 CE — a date widely repeated and honored by San Marino itself (its calendar year famously runs 1,700 years ahead in local reckoning), but not independently documented. The earliest solid documentary evidence of a self-governing community on the mountain is a charter dated 885 CE; by the high Middle Ages a recognizable commune with its own statutes and elected officials is firmly attested, laying the groundwork for the formal 1600 constitution.

What it represents: the oldest attested standard is one commissioned in Florence on 4 September 1465, a tricolour of gold or orange, white and alessandrino (violet, or recently reinterpreted as a shade of azure), according to Wikipedia and the government of San Marino. No source read covers the legendary founding in 301 or any earlier flag, or dates white-over-blue colours to this era; the drawing here is an undated tradition, not a documented banner.

Not yet checked against sourceshow we know this

Wikipedia: the oldest attested standard is dated 4 September 1465, commissioned in Florence, a tricolour of gold, white and alessandrino. The Government of San Marino describes the 1465 flag as an orange, white and violet tricolour; Flags of the World (historical flags) dates the attested old republic flag to 1465. The Government page says the present colours are drawn from the 14th-century arms of the three peaks of Titano.

Not established: No source covers the founding legend of c.301 or any flag before 1465, and none dates white-over-blue colours to this era.

Paint guide
ProportionsN/A — no attested flag this early; shown at 3:2 for consistency.
LayoutHorizontal bicolor, white over light blue, dashed border marking the undocumented, traditional nature of this era's flag.
White#FFFFFF
Light blue#4AB4E6

Reading the tags

Self-governing republic — sovereign commune, own statutes and elected rule
Republic, treaty-recognized — independence formalized by treaty with neighboring powers
Leader — the named ruler most associated with the era's start
State religion — the official/established faith, not the population's

Find the records

Family history research for San Marino lives in a different project, Record Atlas, which maps which archive actually holds the paper for a given place and era.

Search Record Atlas for San Marino →

More of the atlas

This page is one lineage in a larger set. See the region-wide map and the other countries here:

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Compiled from Wikipedia, Flags of the World (fotw.info / crwflags.com), and Britannica. Colors are close historical approximations for painting reference; pre-19th-century swatches are informed reconstructions, not official specifications.