Robert Tchenguiz (born 9 September 1960) is a British entrepreneur, property investor, activist shareholder and securities dealer. The younger brother of Vincent Tchenguiz, he undertook a series of corporate deals, focusing particularly on property assets associated with UK pub and supermarket chains, during the 2000s. However, the value of some of his investments plunged during the financial crisis of 2007–08, exacerbated by the collapse of his major financial backer, Iceland's Kaupthing Bank. He and his brother's businesses were also the target of a UK Serious Fraud Office enquiry, and of various lawsuits.