Tiner, currently the managing director of consumer, investment and insurance at the FSA will take on his new role on 22 September, when Sir Howard steps down to join the London School of Economics as director.
Sir Howard was formerly both chief executive and chairman of the City watchdog, but the role has been split, with Callum McCarthy already confirmed as new chairman from September.
ICAEW-qualified Tiner spent 21 years at Arthur Andersen, where he rose to the position of head of the world-wide financial services industry practice at the now defunct firm.
Commenting on his successor, Sir Howard said: ‘John has already made an enormous contribution to the work of the FSA. He is an excellent appointment and has a clear understanding of the needs of consumers and the industry.
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