Nightclub owner Eric Ding Si Yang, 32, could face up to 15 years in prison and a fine of up to Sg$300,000 ($240,000) for bribing referee Ali Sabbagh, 35 and assistant referees Ali Eid, 34, and Abdallah Taleb, 38.
Sentencing has been scheduled for July 22.
District Judge Toh Yung Cheong said in a written judgement the prosecution had proven beyond reasonable doubt that Ding offered the Lebanese trio free sexual services to "induce the three of them to agree to getting involved in match-fixing".
The three Lebanese were arrested in the early hours of April 3 last year for accepting sexual favours in exchange for agreeing to fix an unspecified football match.
They had been scheduled to officiate at an Asian Football Confederation Cup match between Singapore-based club Tampines Rovers and India's East Bengal but were pulled out after their detention.
All three subsequently pleaded guilty. Sabbagh was jailed for six months while Ali Eid and Abdallah Taleb served three-month sentences.
"In fact, his claim that he was a freelance journalist could provide ideal cover for his illegal activities and also grant him access to match officials," the judge said.
Ali Sabbagh, who became a prosecution witness while serving his sentence, testified during the nearly year-long trial that Ding had showed him YouTube videos to teach him how to fix games as a match official.
