Shaikh Salman bin Ebrahim al Khalifa put forward his candidacy, before the deadline passed at midnight Monday.
He's been forced to deny some pretty serious allegations, with human rights campaigners accusing him of being involved in the arrest and torture of footballers when he was head of the Bahrain Football Association.
Shaikh Salman described the accusations as "false, nasty lies". The 49-year-old head of the Asian Football Confederation can expect widespread support from within his own camp.
Another leading contender is South African anti-apartheid campaigner Tokyo Sexwale, who was once jailed alongside Nelson Mandela. He's promised to bring "transparency and accountability" to football.
Other candidates include the Jordanian Prince Ali Bin Al Hussein, and 57-year-old French former diplomat Jerome Champagne.
Meanwhile Uefa General Secretary Gianni Infantino is also standing, in a move that has cast doubt over the bid from Uefa president Michel Platini - himself implicated in a Swiss criminal investigation into Fifa.
The mystery candidate in the Fifa race is David, the 51-year-old former captain of Trinidad and Tobagao. He says it's time for football's power to be moved away from Europe.
Finally there's Musa Bility, president of the Liberian Football Association, whose candidacy is something of surprise.