Kingdom of Saudi Arabia (standardized)
Who & why: a 1973 royal decree fixes the flag's precise proportions, calligraphy, and sword design in law, formalizing a banner the family had already flown for decades. The kingdom becomes a founding OPEC member, the world's largest oil exporter through the later 20th century, and host to Islam's two holiest cities, Mecca and Medina — a role its rulers style themselves "Custodian of the Two Holy Mosques" to reflect from 1986 onward.
What it represents: the same green field, shahada, and sword carried since the reconquest era, now specified precisely enough that the flag is never lowered to half-mast and never printed on disposable items, out of respect for the religious text it bears.
Both sources give 1973, the year this page starts the current flag. Wikipedia's infobox gives the adoption as 15 March 1973; Flags of the World dates it 1932.
- Flag of Saudi Arabia — Wikipedia compiled
- Saudi Arabia — Flags of the World (CRW Flags) compiled
Not established: Only the year the current flag was adopted was compared; the design and the swatch colours were not checked against a specification.