Elizabeth Killigrew, Viscountess Shannon (16 May 1622 (baptised) – December 1680) was an English courtier. She was a daughter of Sir Robert Killigrew and Mary Woodhouse, and sister of dramatist Thomas Killigrew. Elizabeth was baptised at St Margaret Lothbury, London. On 24 October 1639 she married Francis Boyle (later Viscount Shannon), son of the Irish landowner Richard Boyle, 1st Earl of Cork. He was a friend of her stepfather, Thomas Stafford (MP). As the couple was young, there was discussion whether they should live together, or Francis Boyle depart on a Grand Tour first.