Lewis Watson, 2nd Earl of Rockingham

Lewis Watson, 2nd Earl of Rockingham (c. 1714 – 4 November 1745) was a British peer, styled Viscount Sondes from 1722 to 1724.

He inherited the earldom from his grandfather, Lewis Watson, 1st Earl of Rockingham, in 1724. He was Lord Lieutenant of Kent from 1737. He died childless and was succeeded by his brother, Thomas.

He was married to his first cousin 'Catherine', daughter of Sir Robert Furnese. After he died in 1745, she remarried to Francis, Earl of Guildford.