Hilary Mary Weston CM CVO OOnt (née Frayne; born January 12, 1942) is an Irish–Canadian businesswoman and writer who served as the 26th Lieutenant Governor of Ontario from 1997 to 2002.

[5] Prior to her appointment as Lieutenant Governor, Weston spent over two decades working in business and the fashion industry.

An interest in early childhood education led Weston to serve as founding chair of the Mabin School in Toronto.

After her term as Lieutenant Governor, Weston spearheaded the most successful fundraising campaign in Canadian cultural history, which raised more than $250 million for the Royal Ontario Museum.

Weston also devotes a significant proportion of her time, as well as her business and fashion expertise, to Selfridges, the London department store of which she is a director.