The former British prime minister was reportedly present when Mr Murdoch's two daughters were baptised on the banks of the river Jordan last year.
The link between Rupert Murdoch and Tony Blair was revealed in a Vogue interview with Mr Murdoch's wife, Wendi Deng, the mother of nine-year-old Grace and Chloe, eight.
In the wake of the phone-hacking scandal and inquiries into the relationships between politicians, the media, and the police, the revelation could prove embarrassing for Mr Blair.
