Jevons will start in the post next month and bring with her experience of delivering the successful London 2012 Olympic and Paralympic Games.
She replaces Paul Vaughan, who officially stepped down from leading the 2015 Rugby World Cup delivery body by "mutual consent".
In thanking Vaughan for his contribution, ER 2015 chairman Andy Cosslett said the time was right, with three years to go until the World Cup, for a "fresh injection of experience to take us up to the next level".
Jevans certainly brings that, having played a key role in delivering the Olympic and Paralympic Games to London.
"I have spent the last decade planning and delivering the world's two largest sporting events," Jevans said.
"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.
"As a passionate sports fan the next decade is a great one for the UK and we have an amazing opportunity to bring rugby and the values of sport to more fans across the country than ever before.
"I look forward to starting my new role next month. In the meantime my focus is on continuing to deliver a great Paralympic Games."
In thanking Vaughan for his contribution, ER 2015 chairman Andy Cosslett said the time was right, with three years to go until the World Cup, for a "fresh injection of experience to take us up to the next level".
Jevans certainly brings that, having played a key role in delivering the Olympic and Paralympic Games to London.
"I have spent the last decade planning and delivering the world's two largest sporting events," Jevans said.
"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.
"As a passionate sports fan the next decade is a great one for the UK and we have an amazing opportunity to bring rugby and the values of sport to more fans across the country than ever before.
"I look forward to starting my new role next month. In the meantime my focus is on continuing to deliver a great Paralympic Games."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
