Lieutenant-General Arthur Richard Wellesley, 2nd Duke of Wellington,, styled Lord Douro between 1812 and 1814 and Marquess of Douro between 1814 and 1852, was a British soldier and politician. The eldest son of Arthur Wellesley, 1st Duke of Wellington, victor of Waterloo and Prime Minister, he succeeded his father in the dukedom in 1852 and held minor political office as Master of the Horse from 1853 to 1858. In 1858, he was made a Knight of the Garter.

Catherine Sarah Dorothea Wellesley, Duchess of Wellington, known before her marriage as Kitty Pakenham, was the wife of Arthur Wellesley, 1st Duke of Wellington.