The Mail on Sunday revelations came only two days after former England captain David Beckham had helped the FA submit a 1,752-page bid book as they try to persuade Fifa to award England the 2018 World Cup.
"I have decided to resign as chairman of the FA and the 2018 Bid board," Triesman said in a statement.
"A private conversation with someone whom I thought to be a friend was taped without my knowledge and passed to a national newspaper," he added, referring to former aide Melissa Jacobs, who met Triesman a fortnight ago.
Lord Triesman quits FA and 2018 World Cup bid jobs
May 16, 2010