Sir William Masham, 1st Baronet (c. 1592 – c. 1656) was an English politician who sat in the House of Commons variously between 1624 and 1655.
Masham was the only son of William Masham of St Botolph without Aldgate, London and educated at Magdalen College, Oxford (1607) and the Inner Temple (1610).
[1] He was elected Member of Parliament for Maldon in 1624, 1625 and 1626 and for Colchester in place of Edward Alford in 1628 after a petition.
He was re-elected MP for Essex in 1654 for the First Protectorate Parliament.
[2] He married Elizabeth, the daughter of Joan and Sir Francis Barrington of Hatfield Broad Oak, Essex,[3] and the widow of Sir James Altham of Mark Hall, Latton, Essex.