Baroness Masham may refer to:
Abigail Masham, Baroness Masham ( – 1734), English courtier and royal favourite Susan Cunliffe-Lister, Baroness Masham of Ilton (1935–2023), British life peer and disability campaigner
See also Baron Masham, a title in the Peerage of the United Kingdom Damaris, Lady Masham (1659–1708), English philosopher and theologian