Earl of Eglinton

Earldom of Eglinton
Quarterly 1st and 4th grand quarters counterquartered 1st and 4th Azure three fleur-de-lys Or (Montgomerie); 2nd and 3rd Gules three annulets Or stoned Azure (Eglinton), all within a bordure Or charged with a double treasure flory counter-flory Gules; 2nd and 3rd grand quarters counterquartered 1st and 4th Or three crescents within a double treasure flory counterflory Gules (Seton); 2nd and 3rd Azure three garbs Or (Buchan) over all an escutcheon parted per pale Gules and Azure the dexter charged with a sword in pale proper pommelled and billed Or supporting an imperial crown the sinister charged with a star of twelve points Argent, all within a double treasure flory counterflory Gold.
Peerage	Peerage of Scotland
Present holder	Archibald Montgomerie, 18th Earl of Eglinton
Heir apparent	Hugh Archibald William Montgomerie, Lord Montgomerie
Subsidiary titles	Lord Montgomerie
Former seat(s)	Eglinton Castle Skelmorlie Castle

Earl of Eglinton is a title in the Peerage of Scotland. In 1859, the thirteenth Earl of Eglinton, Archibald Montgomerie, was also created Earl of Winton in the Peerage of the United Kingdom, which gave him an automatic seat in the House of Lords, and both earldoms have been united since. Furthermore, other titles held with the earldoms are: Lord Montgomerie (created 1449), Baron Ardrossan (1806) and Baron Seton and Tranent (1859). The first is in the Peerage of Scotland, while the latter two are in the Peerage of the United Kingdom.

William Dunbar mentions a Sir Hugh of Eglinton in his Lament for the Makaris, citing him as a fellow poet. He has sometimes been tentatively identified as Huchown, but this is not certain.

The Earl of Eglinton is the hereditary Clan Chief of Clan Montgomery.

The family seat is Balhomie House, near Cargill, Perthshire. The ancestral seat was Eglinton Castle, near Irvine, North Ayrshire.

The heir apparent is the present holder's son Hugh Archibald William Montgomerie, Lord Montgomerie (b. 1966).
The heir apparent's heir apparent is his son the Hon. Rhuridh Seton Archibald Montgomerie, Master of Montgomerie (b. 2007).