The Board’s former treasurer, Laurence Brass, was a major backer of Mr Farron’s campaign.
Following May’s general election, Mr Farron told the JC Israel’s actions during last summer’s Gaza conflict had been “disproportionate” .
He also said he regretted the unseating of anti-Israel Lib Dem David Ward at the election, describing him as a “good constituency MP”.
Eight Lib Dem MPs were elected in May, down from 57 in the previous Parliament. That result triggered the resignation of Nick Clegg as leader.
Mr Farron also said he intended to visit Israel and the West Bank for the first time later this year.