Sea of Souls is a BBC paranormal drama series, recounting the fictional activities of a group of investigators into psychic and other paranormal events. Produced in-house by BBC Scotland and for the final season by Carnival Films, initially in association with Sony Pictures Television International, the series debuted on BBC One in the UK in February 2004. A second series was shown from January 2005, with a third following in 2006 and then a fourth in April 2007.

The programme was created by writer David Kane, who also wrote the entire first series. The final series, unlike the previous series, was an independent production for BBC Scotland by Carnival Films.