George James Welbore Agar-Ellis, 1st Baron Dover PC FRS FSA (14 January 1797 – 10 July 1833) was a British politician and man of letters.

In 1824 Agar-Ellis was the leading promoter of the grant of £57,000 for the purchase of John Julius Angerstein's collection of pictures, which formed the foundation of the National Gallery.

On the formation of Lord Grey's Whig administration in November 1830, he was sworn of the Privy Council[7] and appointed First Commissioner of Woods and Forests.

[9] He was president of the Royal Society of Literature in 1832, a trustee of the British Museum and of the National Gallery, and a commissioner of public records.

[1] Lord Dover's works were chiefly historical, and include: He also edited the Ellis Correspondence (1829) and Walpole's Letters to Sir Horace Mann (1833).