Sir (Charles) Geoffrey Vickers, VC (13 October 1894 – 16 March 1982) was an English lawyer, administrator, writer and pioneering systems scientist. He had varied interests with roles at different times with the London Passenger Transport Board, Law Society, Medical Research Council and Mental Health Research Fund. In the later years he wrote and lectured on social systems analysis and the complex patterns of social organisation. The Sir Geoffrey Vickers Memorial Award has been presented by the International Society for the Systems Sciences since 1987 in his memory.