The debate will be positioned between those wishing to protect their children, against an argument that children will access Facebook anyway, through lying about their age.
"We have a strict under-13 rule because of legal issues in America," Simon Milner head of Facebook policy in Britain said.
"We apply the same rule all over the world. But a lot of parents are happy their kids are on it. We would like to hear from people what the answer might be," said Milner of his proposed debate on the issue at The Sunday Times Festival of Education at Wellington college, Berkshire.
The site was recently floated as a public company, stumbling to $US38.23 per share - 23 cents above where it began.
Facebook has not yet responded to a request for comment regarding any potential Australian change.