Debbie Jevans, the director of sport for LOCOG, has been appointed as the new chief executive of England Rugby 2015.
Jevons will start in the post next month and bring with her experience of delivering the successful London 2012 Olympic and Paralympic Games to the company set up to deliver the 2015 World Cup.
She replaces Paul Vaughan, who officially stepped down from leading the body by "mutual consent" earlier on Wednesday.
"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," said ER 2015 Chairman Andy Cosslett.
"Armed with this knowledge and pedigree across many facets of multi sport events we are delighted Debbie has decided to join us.
"Her London Olympic and Paralympic Games' experience will be vital as we look forward to hosting the Rugby World Cup."