Debbie Jevans has replaced Paul Vaughan who has stepped down from his post as Chief Executive of the England 2015 Rugby World Cup organising body.
Jevans is currently Director of Sport at The London Organising Committee of the Olympic and Paralympic Games (LOCOG), and will become the new Chief Executive Officer (CEO) of England Rugby 2015 in October.
England Rugby 2015 Chairman Andy Cosslett said: "This is an exciting appointment for ER 2015. Debbie is hugely respected across sport and rugby will benefit from her experience in leading large teams to deliver major sporting events to a global audience.
"Armed with this knowledge and pedigree across many facets of multi sport events we are delighted Debbie has decided to join. Her London Olympic and Paralympic Games experience will be vital as we look forward to hosting the Rugby World Cup."
RWCL Chairman Bernard Lapasset said: "Rugby World Cup Limited welcomes Debbie Jevans' appointment as Chief Executive of ER 2015."
"The successful delivery of one of the world's largest sporting events is founded on a clear vision, partnership, teamwork and strong leadership. As a driving force behind the exceptional London 2012 Olympic and Paralympic Games, Debbie certainly possesses all the necessary attributes to drive the delivery of what promises to be a special tournament."
"On behalf of RWCL and the IRB I would like to thank Paul Vaughan for his strong contribution to developing the early foundations for the delivery of Rugby World Cup 2015 in England and I wish him all the very best," added Lapasset.
Jevans said: "I have spent the last decade planning and delivering the world's two largest sporting events. This has been an extraordinary journey and I am looking forward to putting my experience and expertise in to delivering an exceptional Rugby World Cup in 2015.
With a little over three years to go until England hosts a Rugby World Cup for the second time, a number of key milestones have been achieved in 2012, including setting the tournament dates and detailed venue assessments undertaken. The year will culminate in the Rugby World Cup 2015 Pool Allocation Draw in London on December 3.