Charles Cavendish, Viscount Mansfield (c. 1626 – June 1659) was an English gentleman who sat in the House of Commons from 1640 to 1644.
Viscount Mansfield was the eldest son and heir of William Cavendish, 1st Earl of Newcastle-upon-Tyne, who was so created in 1628, and his first wife, Elizabeth Basset of Blore.
[1] From 1628, as a son and heir he was known by his father's second peerage, Viscount Mansfield, used as a courtesy title.
[2] He was disabled from sitting in 1644 and went into exile with his father, returning to England in 1659.
His younger brother Henry succeeded their father as second duke of Newcastle, a title he was given after the Restoration of 1660.