The tale of the young wizard and Arthur Pendragon will come to an end with a special two-part finale this Christmas.
The series, which stars Colin Morgan, Bradley James, Katie McGrath, Richard Wilson and John Hurt, first aired in the UK on 2008 and has been sold to more than 180 countries.
Announcing the show’s demise, co-creators and executive producers Johnny Capps and Julian Murphy said: “This is the series where the storylines truly reach their apex.
“We always felt the story of the legend was best told across five series, leading to a spectacular finale that draws on the best known elements of this much-loved story and brings to a conclusion the battle for Camelot.”
The series stars have thanked fans around the world for their support over the show’s five year run.
Morgan said: ”The show has grown and grown each year and now we’ve arrived at its strongest point and we’ve achieved what we set out to do. I know this is the end, and I know this is goodbye, but thank you for being there on the journey with us because it has been a lot of fun!”
“The Merlin years have provided me with fond memories, great experiences and beloved friends and all the while we were supported by a devoted fan base who made the show a unique, surreal and special experience,” added James.