Margaret Norrie McCain CC ONB (née Norrie; born October 1, 1934) is a Canadian philanthropist who was the first woman to serve as the lieutenant governor of New Brunswick.

[1] As a member of the wealthy McCain family, she has donated millions of dollars to charitable causes.

[5] McCain is the founding patron of the Muriel McQueen Fergusson Foundation for the elimination of family violence.

[8][9][10] The first report, Early years study : reversing the real brain drain, was commissioned by the Government of Ontario.

McCain continued to advocate for improvements in early childhood education.