Sveg ([sve:g]) is a locality and the seat of Härjedalen Municipality in Jämtland County, Sweden with 2,547 inhabitants in 2010.
The Swedish author Henning Mankell was brought up in Sveg, and it is the setting for his crime novel Danslärarens återkomst (The Return of the Dancing Master).
Sveg has a relatively mild subarctic climate. It has certain continental features, being prone to heat and cold extremes with an all-time record of 36 °C (97 °F) and a cold extreme of −43 °C (−45 °F), although the latter was set in the 19th century. A more recent reading was −42.6 °C (−44.7 °F) in January 1987 during a chilling cold wave that struck Northern Europe. In spite of it being in the middle of the Scandinavian landmass on such a high parallel, the winters are somewhat milder than expected, due to the mild North Atlantic air that often rises temperatures. Summer days are often warm, many times averaging around 20 °C (68 °F), but nights are regularly cool, and frost can be recorded even in the midst of summer. In terms of Scandinavian climate, Sveg is an anomaly in that December is somewhat colder than February.
The following sports clubs are located in Sveg:Svegs IK