Morden i Sandhamn (English: Sandhamn Murders) is a Swedish television crime drama series. It is based on the book series of the same name by writer, Viveca Sten, with later seasons set in Sten's fictional universe. The series is broadcast on TV4, which has presented nine seasons from 20 December 2010. The series follows Nora Linde (Alexandra Rapaport), a lawyer who owns a summer house on Sandhamn, and her assistance in solving various murders on or near that island. Portraying Nora's children, Simon and Anna, are real-life siblings, Lion Monn and Ping Monn, respectively. The first six seasons featured Thomas Andreasson (Jakob Cedergren) of the Nacka police as the lead detective. From season seven, Alexander Forsman (Nicolai Cleve Broch) is the new lead detective.Seasons one to five comprise three episodes per season, each covering one investigation arc. For seasons six and seven there were eight episodes each, with two parts per investigation. Seasons six and seven were broadcast as four double-episodes on C More Film and eight single episodes on TV4. In August 2020 TV4 announced that an eighth season was in production. It was broadcast from 8 August 2022 on C More as three double episodes each covering a story arc and as six single episodes. Season 9 was broadcast as six single episodes in April and May 2023.

Seasons one to five (as Sandhamn Murders) were broadcast from May 2021 on Australian network SBS-TV's streaming service, On Demand. Seasons six and seven followed in July 2021 on the same network. Season 8 followed in 2023. Morden i Sandhamn seasons one to three were released as The Sandhamn Murders, Vol. 1, a box set of 3× DVD, in March 2019. It was issued at the same time as The Sandhamn Murders, Vol. 2, also a box set of 3× DVD, which covers seasons four and six. Both box sets were issued in Swedish with English subtitles. The Swedish television series was remade as a Polish series, Zbrodnia (English: The Crime), which premiered on October 16, 2014.