|Aired from||15th November 2014 - 16th May 2015|
|Premiere||A New Dawn (part one)|
|Finale||The Queen Must Die (double-length episode)|
Robert Emms revealed on his twitter that series two was to start in November time. A teaser for Series Two later appeared on 4th October 2014 on BBC One, following the Doctor Who episode Kill the Moon, confirming that the second series of Atlantis will indeed premiere on 15th November, a week following the finale of Series 8 of Doctor Who.
Having started at a later date than the previous year due to being pushed back by Doctor Who, series two would be split into two halves. The first six episodes were aired before Christmas of 2014 before the series went on a midseason hiatus, with the remaining seven episodes being aired later in Spring 2015 following the Easter holidays. Sadly, during the hiatus in late January, it was announnced by the BBC that Atlantis had been cancelled and that the remaining episodes would be the last. 
The finale aired as a combined 90 minute double episode on 16th May 2015.
- Main article: Cast and Characters
- Mark Addy as Hercules (6 episodes)
- Jack Donnelly as Jason (6 episodes)
- Robert Emms as Pythagoras (6 episodes)
- Sarah Parish as Pasiphae (5 episodes)
- Juliet Stevenson as the Oracle (3 episodes)
- Aiysha Hart as Ariadne (6 episodes)
- Vincent Regan as Dion (5 episodes)
- Peter de Jersey as Goran (4 episodes)
- Amy Manson as Medea (5 episodes)
- Ronald Pickup as Orpheus (3 episodes)
- Clive Standen as Telemon (2 episodes)
- Alexander Siddig is no longer present in his recurring role as King Minos in the first series. Despite Minos' recovery from Phasiphae's plot to murder him, he is said to have passed away in the intervening time between series.
- The Colcheans are introduced as an enemy to the Atlanteans and the army of the former Queen Pasiphae (Sarah Parish), who has taken command of them since her exile from Atlantis.
|#||Image||Title||Writer||Director||Broadcast Date||Viewer Rating|
|1||A New Dawn Part 1||Howard Overman||Justin Molotnikov||15th November 2014||5.32|
|2||A New Dawn Part 2||Howard Overman||Justin Molotnikov||22nd November 2014||4.67|
|3||Telemon||Richard McBrien||Justin Molotnikov||29th November 2014||4.65|
|4||The Marriage of True Minds||Lucy Watkins||Declan O'Dwyer||6th December 2014||4.49|
|5||The Day of the Dead||Howard Overman||Declan O'Dwyer||13th December 2014||4.68|
|6||The Grey Sisters||Howard Overman||Declan O'Dwyer||20th December 2014||5.69|
|7||A Fate Worse Than Death||Howard Overman||Lawrence Gough||11th April 2015||TBC|
|8||The Madness of Hercules||Richard McBrien||Lawrence Gough||18 April 2015||TBC|
|9||The Gorgon's Gaze||Julian Jones||Lawrence Gough||25 April 2015||TBC|
|10||The Dying of the Light||Lucy Watkins||Justin Molotnikov||2 May 2015||TBC|
|11||Kin||Julian Jones||Justin Molotnikov||9 May 2015||TBC|
|12||The Queen Must Die||Howard Overman||Julian Murphy||16 May 2015||TBC|