The agency launched the Christmas-themed event in 2007 and has managed and promoted it for the last seven years.
Jamie Wells, director of PWR Events, said: "We are thrilled that we have been awarded the contract and look forward to continue working with our partners at The Royal Parks to deliver our fantastic event.
"We have loved creating Hyde Park Winter Wonderland from the beginning and are delighted that we can continue to build on its success. Our team will continue to develop the event and make it even better over the coming years."
The event has welcomed more than 14 million visitors since its launch and features more than 100 attractions, including the UK's largest ice rink and The Magical Ice Kingdom, a snow and ice show sculpture experience created by PWR Events.
Penelope Boyd, head of events and filming at The Royal Parks, said PWR Events has been instrumental in making the event a huge success and it is now firmly established as a top attraction in the seasonal calendar.
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