Sweden was located in Scandinavia. (AUDIO: Project: Lazarus) Uppsala was located in there. (PROSE: The Spear of Destiny)
History
The Third Doctor and Jo Grant visited Sweden in 141 and encountered the Master. (PROSE: The Spear of Destiny)
The Eighth Doctor and Izzy visited Sweden in 1070. (PROSE: Illumination)
When trying to gain access to Rosanna Calvierri's school for girls in Venice in 1580, Rory Williams used the psychic paper as a reference from the King of Sweden. (TV: The Vampires of Venice)
In 1898, the Eighth Doctor and Lucie Miller visited Stockholm, a city in Sweden. At this time, the country was ruled by King Oscar. (AUDIO: Grand Theft Cosmos)
In 2011, CIA Rex Matheson found a record of one pulp fiction author in Sweden who was potentially Victor Podesta following his 1938 disappearance. (TV: The Gathering)
The musical group ABBA was from Sweden. (PROSE: The Twilight Streets)
The Eighth Doctor and Fitz Kreiner visited Sweden in 1999. (PROSE: Dominion)
At 8:40AM GMT on a Wednesday in September 2009, Sweden was among the numerous places across Earth in which RTAs occurred as a result of the 456 compelling every human child to suddenly stop and proclaim their message: "We are coming." (TV: Children of Earth: Day One)