Charges were brought against the officials, from Hungary and Bosnia, after two friendly matches in Turkey.
Latvia against Bolivia then Estonia versus Bulgaria produced seven goals between them.
The Hungarian referees are being held by police in their country.
Authorities are investigating further the match-fixing accusations levelled at Kolos Lengyel, Krisztian Selmeczi and Janos Csak, while the Bosnian officials — Sinisa Zrnic, Kenan Bajramovic and Rizah Ridalovic — denied the charges at the hearing, but were found guilty.
The two international friendlies were fixed for a betting scam, which has become an important case as football’s world governing body attempts to up its fight against match-fixing.
Crime syndicates are believed to have made millions of pounds betting on the fixed matches, including wagers that at least three goals would be scored in each fixture. Latvia beat Bolivia 2-1 and Estonia and Bulgaria played out a 2-2 draw.
The officials were found guilty of “passive corruption” and “unlawfully influencing match results” by Fifa’s disciplinary committee.
Another senior football figure has also been banned by Fifa, for a year, in the fall-out to the bribery scandal.
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