You Can't Say That is a 2011 political memoir by British politician Ken Livingstone, who served as Mayor of London (2000–8), leader of the Greater London Council (1981–86) and member of the House of Commons for Brent East (1987–2001).

Livingstone is a critic of the Invasion of Iraq, is a republican, and identifies as a democratic socialist.

He sought nomination as Labour candidate for Mayor of London in 2000 but was not selected.

John Kampfner in The Observer was also positive and saw the book as being "honest, nuanced and picaresque.

[3] The book was also reviewed by Sonia Purnell in The Independent[4] and by Chris Mullin in the New Statesman.