Sir Arthur Paget GCB, PC (15 January 1771 – 26 July 1840) was a British diplomat and politician.
Arthur Paget was the third son of Henry Paget, 1st Earl of Uxbridge and his wife Jane Champagné daughter of Arthur Champagné, Dean of Clonmacnoise in Ireland. He was a younger brother of Henry Paget, 1st Marquess of Anglesey and the older brother of Sir Edward Paget, an army officer and colonial governor.
He was educated at Westminster School and Christ Church, Oxford, but did not take a degree. At Oxford, Paget formed a close relationship with Cyril Jackson, Dean of Christ Church.
In 1791, he entered the British diplomatic service. J. M. Rigg described Paget as 'a man of easy charm who made his way with little difficulty up the diplomatic ladder, assisted by his moderate whiggery. In 1794, he was elected as Member of Parliament for Anglesey. He nominally represented this for 13 years, though usually abroad. In 1794, he was sent as Envoy-extraordinary to Berlin to remind King Frederick William II of his obligations to Holland, a service in which Lord Malmesbury the ambassador commended him for his tact.
His next appointment was as Envoy Extraordinary to the Elector Palatine and the Perpetual Diet at Regensburg in 1798, followed by Envoy Extraordinary and Minister Plenipotentiary first at Naples in 1800 and then at Vienna the following year. He remained at Vienna until 1806, being nicknamed "The Emperor" on account of his extravagance.
A dispatch in 1802, following Napoleon's creation of the Confederation of the Rhine predicted the hegemony of Prussia within Germany. He was materially contributed to the creation of the Third Coalition, and reported its collapse following the Battle of Austerlitz (2 December 1805), a dispatch that is said to have hastened the death of William Pitt the Younger (23 January 1806).
After his recall from Austria, he was sent to the Ottoman Porte in 1807, where he told the Sultan of a secret clause in the Treaty of Tilsit adverse to his interests. However, he was unable to detach the Ottoman Empire from its French Alliance. He was recalled in May 1809 and awarded a pension of £2,000.
Paget was the 2nd brother of the 1st Marquis of Anglesey (RYS Original Member 1815-1853) He died on 26th July 1840.