Jonathan Goldstein is set to become the new chairman of the Jewish Leadership Council next month after the second nominee to succeed Sir Mick Davis decided not to stand.
Stephen Pack, who will step down as president of the United Synagogue in July, said his withdrawal had been “a difficult decision”.
There had been hopes among members of the JLC for a first contested election for its leader.
Mr Goldstein, the chairman of the JLC’s education division, Partnerships for Jewish Schools, said he would still require a confirmatory vote by JLC members before he could take office.