Robert Emms, Jack Donnelly and Mark Addy in 'Atlantis'
The drama, which stars Jack Donnelly, Robert Emms and Mark Addy, became the biggest new Saturday night drama series launch across all channels since 2006 when it premiered this autumn. However, the number of episodes and an air date for the second series have yet to be confirmed.
Across the first three episodes, the show averaged a consolidated audience of 6.7 million, and is averaging 7.4m viewers.
Charlotte Moore, controller for BBC One, said: "Atlantis delivers original British drama with the kind of scale and ambition that we've come to expect from the cinema.
"It feels very much at home on Saturday nights on BBC One, it's been wonderful to watch Howard [Overman] and the team create a whole new world, brilliantly inspired by Greek mythology which is proving a hit with all the family and a second series is richly deserved."
Meanwhile, series creators Johnny Capps, Julian Murphy and Overman said: "We are all thrilled at Urban Myth Films that Atlantis has been re-commissioned and look forward to continuing the legend next year."
Watch the Atlantis cast chat about the show with Digital Spy below: