Lachlan Murdoch has been promoted to non-executive co-chairman of News Corp and 21st Century Fox, while James Murdoch has been promoted to co-chief operating officer of 21st Century Fox.
Both Lachlan Murdoch and James Murdoch were previously directors of both News Corp, which contains the publishing business including the UK newspapers, and 21st Century Fox, the home for its entertainment arm.
Lachlan Murdoch will work alongside his father Rupert Murdoch, who remains the executive chairman of News Corp and the chairman and chief executive of 21st Century Fox.
James Murdoch, who was previously the deputy chief operating officer of News Corporation and its international chairman and chief executive, will work alongside the president and chief operating officer of 21st Century Fox, Chase Carey.
News Corporation split into two businesses in June last year.