Portrait of the Duke of Wellington is an 1814 portrait painting by the English artist Thomas Phillips depicting the Anglo-Irish soldier and politician Arthur Wellesley, Duke of Wellington.

Wellington had recently returned to London from Continental Europe where he had been serving without break since 1809.

His success in the Peninsular War was followed by an invasion of Southern France before the Treaty of Paris brought peace.

The following year he would lead Allied forces to victory at the Battle of Waterloo following the escape of Napoleon and the Hundred Days campaign.

Phillips was a leading portraitist and contemporary of Sir Thomas Lawrence, who painted a number of Regency era figures, including Lord Byron in Albanian Dress.