Christopher Mark Nineham (born June 1962) is a British political activist and founder member of the Stop the War Coalition serving as National Officer and Deputy Chair of the Stop the War Coalition in the UK.

His father was the Reverend Professor Dennis Nineham, the former warden of Keble College, University of Oxford.

He was a leading member of Globalise Resistance, the anti-globalisation network that protested in Genoa and elsewhere and he played a role in the European and World Social Forums.

[2] He has written on the anti-war movement and the anti-capitalist movement as well as on the media, modernism and cultural theory,[5] and is the author of The People Versus Tony Blair[6] and Capitalism and Class Consciousness: the ideas of Georg Lukács.

[7] Nineham is the Chief Steward for many of London's demonstrations against the Israel Hamas War and the British government's involvement, including the 4th largest protest demonstration in UK history on Saturday 11 November 2023.