Mary Camilla Lawson (c.1865 –28 November 1939), born Mary Camilla Macan, later Lady Lawson, was a British Liberal Party politician.
On 28 April 1891, she married Wilfrid Lawson, heir to the Baronetcy of Brayton, Cumberland.
For many years she helped her father-in-law, Sir Wilfrid Lawson MP, in his North of England constituency.
[3] Lawson was Liberal candidate for the Bedford division of Bedfordshire at the 1922 General Election.
Her intervention split the Liberal vote and helped the Unionist candidate take the seat.