Ryan is demanding that the election is held again after discovering that long-time Yorkshire and Derbyshire divisional representative Taylor sent out literature promoting his own campaign along with photocopies of the official ballot paper, contravening FA rules.
Ryan was edged out 9-8 in a postal vote - but feels that the methods employed by Barnsley director Taylor rendered the contest invalid.
And if Soho Square officials fail to investigate his claims, he will look to the law to settle his grievance that Taylor loaded the vote unfairly in his favour.
Ryan explained: "I believe what Taylor (right) did, sending out a photocopied ballot paper along with leaflets promoting his own campaign, made it appear to clubs that he was the FA's preferred choice.
"In my view it wasn't a fair election and the vote should be taken again, especially as it was so close. I believe that Mr K Taylor has behaved improperly and action should also be taken against him.
"I have made a complaint to the FA and I fully expect them to act on this matter. But I am also taking legal advice."
The row could brew into a major embarrassment for FA chairman Lord Triesman, who vowed to bring greater transparency to the organisation when he took the post last year
He will argue that if any photocopied ballot papers are discovered the election should be declared void. Taylor, who is desperate to hang on to his post after losing his place as chairman of the FA Cup committee, said: "I didn't do what's been claimed.
"It's utter nonsense. A complaint was made to the FA when the initial nominations were sent out so I was expecting another complaint when the vote went my way.
"The only thing I sent out was e-mails to all clubs asking them to vote for me."
Taylor has been a divisional representative since 1990 and will be granted the status of a life vice-president of the FA Council if he serves for another year.
Ryan has transformed the fortunes of Doncaster after taking over the club he has supported all his life when they were on the verge of collapse. He's overseen three promotions in six years and development of Rovers' impressive Keepmoat Stadium.
He decided to stand for election to the FA after being encouraged to do so by several clubs in the Yorkshire and Derbyshire area.
Ryan is being advised by Graham Bean, the former FA compliance officer who now uses his expertise in football law to represent players and clubs on disciplinary issues.
Bean said: "This isn't a case of John Ryan being a bad loser. It's about the FA showing that they aren't just paying lip service to being transparent by arranging the vote to be taken again."