Katherine Hastings (née Dudley) Countess of Huntingdon (c. 1538 or 1543–1545 – 14 August 1620) was an English noblewoman. She was the youngest surviving daughter of John Dudley 1st Duke of Northumberland and his wife Jane Guildford and a sister of Robert Dudley Earl of Leicester Elizabeth I’s favourite. Katherine Dudley was betrothed or married on 25 May 1553 at a very young age to Henry Hastings the heir of Francis Hastings 2nd Earl of Huntingdon.