Isabel Euphemia Oakeshott is a right-wing English political journalist and broadcaster.

She was the political editor of The Sunday Times and is the co-author, with Michael Ashcroft, of an unauthorised biography of former British prime minister David Cameron, Call Me Dave, and of various other non-fiction titles, including White Flag?, an examination of the UK’s defence capability, also written with Lord Ashcroft; Farmageddon, co-authored with Philip Lymbery. Farmageddon has been translated into six languages.