|Earldom of Eglinton|
|Monarch||James IV of Scotland|
|Peerage||Peerage of Scotland|
|First holder||Hugh Montgomerie, 3rd Lord Montgomerie|
|Present holder||Hugh Archibald William Montgomerie, 19th Earl of Eglinton, 7th Earl of Winton|
|Heir apparent||Rhuridh Seton Archibald Montgomerie, Lord Montgomerie|
|Subsidiary titles||Lord Montgomerie|
|Former seat(s)||Eglinton Castle|
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.
The heir apparent is the present holder's son, Rhuridh Seton Archibald Montgomerie, Lord Montgomerie (born 2007).