Joan Canning, 1st Viscountess Canning (née Scott; 1776 – 14 March 1837) was the wife of British prime minister George Canning.
She was born in Scotland, the daughter of Major-General John Scott and Margaret Dundas. Her sisters were the Duchess of Portland and the Countess of Moray.
On 8 July 1800, she married George Canning in St George's, Hanover Square on Hanover Square, London, with John Hookham Frere and William Pitt the Younger as witnesses. They had four children:
On 22 January 1828, nearly six months after the death of her husband, Joan was created 1st Viscountess Canning of Kilbraham, with a special remainder to the heirs male of her late husband. She lived with her youngest son in the family's London home in Grosvenor Square.[1]
| Escutcheon: | Or, on a bend azure a mullet of six points between two crescents of the first differenced by a bordure engrailed gules and a crescent of the last (A difference of Scott of Buccleuch, Scotland). |
| Supporters: | Dexter a lion Argent charged on the shoulder with three trefoils slipped Vert and holding in the sinister forepaw an arrow point downwards. Sinister a cormorant holding in its beak a branch of laver all Proper.[2] |