During the period of suspension, Cameroon will not be allowed to be represented in international or club football.
"The FIFA emergency committee has decided today [Thursday], 4 July 2013, to provisionally suspend the Cameroonian Football Association (FECAFOOT) with immediate effect, on account of government interference," a FIFA statement confirmed.
"Articles 13 and 17 of the FIFA statutes oblige member associations to manage their affairs independently and with no influence from third parties."
Iya Mohammed's re-election as the head of FECAFOOT was last week suspended pending an appeal from the national governing body.
It was not all bad news for FECAFOOT today, though, as FIFA also penalised Togo for fielding an ineligible player against Cameroon in a World Cup qualifier.
The world governing body overturned Togo's 2-0 home victory on June 9, awarding the visitors a 3-0 win which sends Cameroon one point clear at the top of Group I with one match remaining - dealing a severe blow to Libya's chances of reaching Brazil next summer.
Cameroon are scheduled to host Libya on September 6 and - if the suspension has been lifted by then - will now need just a draw to progress to the play-off round.
FIFA will set up a "normalisation committee" to revise the FECAFOOT statutes and to organise elections for new office bearers by March 31, 2014.
The FIFA statement continued: "The suspension will be lifted once the country authorities allow the new normalisation committee to enter the FECAFOOT headquarters and to carry out its activities unhindered."