Royal coat of arms of the United Kingdom
Versions
Version of the royal coat of arms used in Scotland
Armiger	Elizabeth II in Right of the United Kingdom
Adopted	1837
Crest	A golden lion, royally crowned and standing on a royal crown; gold and ermine mantling
Blazon	Quarterly: 1 and 4 England, 2 Scotland, 3 Ireland; quarters for England and Scotland are exchanged in Scotland.
Supporters	A golden lion and a silver unicorn
Compartment	Tudor rose, Shamrock, and Thistle
Motto	French: Dieu et mon droit (God and my right)
Order(s)	Order of the Garter
Earlier version(s)	see below
Use	On all Acts of Parliament; the cover of all UK passports; various government departments; adapted for the reverse of coins of the pound sterling (2008)

The royal coat of arms of the United Kingdom, or the Royal Arms for short, is the official coat of arms of the British monarch,^[1][2] currently Queen Elizabeth II. These arms are used by the Queen in her official capacity as monarch of the United Kingdom. Variants of the Royal Arms are used by other members of the British royal family, by the British Government in connection with the administration and government of the country, and some courts and legislatures in a number of Commonwealth realms. In Scotland, there exists a separate version of the Royal Arms, a variant of which is used by the Scotland Office and the Judiciary. The arms in banner form serve as basis for the monarch's official flag, known as the Royal Standard.

In the standard variant used outside of Scotland, the shield is quartered, depicting in the first and fourth quarters the three passant guardant lions of England; in the second, the rampant lion and double tressure flory-counterflory of Scotland; and in the third, a harp for Ireland.^[3] The crest is a statant guardant lion wearing the St Edward's Crown, himself on another representation of that crown. The dexter supporter is a likewise crowned English lion; the sinister, a Scottish unicorn. According to legend a free unicorn was considered a very dangerous beast; therefore the heraldic unicorn is chained,^[4] as were both supporting unicorns in the royal coat of arms of Scotland.

In the greenery below, a thistle, Tudor rose and shamrock are depicted, representing Scotland, England and Ireland respectively. This armorial achievement comprises the motto, in French, of English monarchs, Dieu et mon Droit (God and my Right), which has descended to the present royal family as well as the Garter circlet which surrounds the shield, inscribed with the Order's motto, in French, Honi soit qui mal y pense (Shame on him who thinks evil). The official blazon of the Royal Arms is:

Quarterly, first and fourth Gules three Lions passant gardant in pale Or armed and langued Azure (for England), second quarter Or a Lion rampant within a double tressure flory-counter-flory Gules (for Scotland), third quarter Azure a Harp Or stringed Argent (for Ireland), the whole surrounded by the Garter; for a Crest, upon the Royal helm the Imperial Crown Proper, thereon a Lion statant gardant Or imperially crowned Proper; Mantling Or and Ermine; for Supporters, dexter a Lion rampant gardant Or crowned as the Crest, sinister a Unicorn Argent armed, crined and unguled Proper, gorged with a Coronet Or composed of Crosses patées and Fleurs-de-lis a Chain affixed thereto passing between the forelegs and reflexed over the back also Or. Motto "Dieu et mon Droit" in the compartment below the shield, with the Union Rose, Shamrock and Thistle engrafted on the same stem.^[3]