Rachel Marjorie Joan Whetstone (born 22 February 1968) is a public relations executive. She currently serves as senior vice president of communications and public policy for Google.
Her maternal-grandfather was Antony Fisher, founder of many libertarian think tanks, including the Institute of Economic Affairs, the Atlas Economic Research Foundation and the Adam Smith Institute. Her mother is Linda Whetstone, who has been involved with several of Fisher's think tanks. Raised in East Sussex, Whetstone attended Benenden School and then read politics at Bristol University.
Upon graduation she joined Conservative Central Office, advising then-Home Secretary Michael Howard. She subsequently entered the private sector, working for One2One and Portland PR, before returning to Westminster in 2003 as Political Secretary to Howard when he became Conservative Party leader. When Howard stood down following the general election in 2005, she returned to the private sector, joining Google in California.
Whetstone is married to Steve Hilton. The couple were godparents to Ivan Cameron, the late eldest child of David Cameron.
In February 2013, Whetstone was assessed as one of the 100 most powerful women in the United Kingdom by Woman's Hour on BBC Radio 4.