Independent senator Nick Xenophon says he will keep challenging the Church of Scientology's right to be recognised as a religious organisation.

Senator Xenophon said Scientology was a cult and not a religion, adding he would continue to pursue the organisation because former members had become 'victims' of its practices.

"... I want to be quick to acknowledge that Scientology is just one organisation in the community that can be rightly described as a cult," Senator Xenophon told a forum on cults at Brisbane's Parliament House.

"I heard some of these stories from the people who approached my office to share their experiences with Scientology.

"Since my first speech to the Senate on this subject, I have unfortunately heard many more."