John Griffith-Jones has confirmed he plans to leave the Financial Conduct Authority (FCA) and the Payment Systems Regulator (PSR) in March 2018.
Mr Griffith-Jones committed to a five-year term when he was appointed as the first FCA chairman with effect from 1 April 2013.
He became chairman of the PSR when it was established in April 2014.
His term of office at both organisations expires on 31 March 2018.
Mr Griffith-Jones said: “I committed to a five-year fixed term to chair the FCA and, in so doing, to help ensure that conduct regulation became a respected part of the UK financial landscape.
“It has been, and continues to be, a great privilege to be responsible for the work of both the FCA and the PSR. I like to believe that I will leave both in good shape to regulate well in the future.”
Chancellor Philip Hammond said: “I want to thank John Griffith-Jones for his work as chairman of both the Financial Conduct Authority and the Payment Systems Regulator.
“Both undertake a vital role in ensuring that the UK financial markets work well and that the interests of consumers and users of those markets are protected.
“John Griffith-Jones has provided strong leadership to both boards during his tenure, helping to establish them as key parts of the UK financial regulatory system.”
HM Treasury will now commence the process for recruiting a new chairman for the FCA.