När is a populated area, a socken (not to be confused with parish), on the Swedish island of Gotland, with 413 inhabitants in 2014. It comprises the same area as the administrative När District, established on 1 January 2016.
The När Lighthouse is located east of the village on Närsholmen.
Gutasaga (Gutasagan) is a saga regarding the history of Gotland before its Christianization. It was recorded in the 13th century and survives in only a single manuscript, the Codex Holm. B 64, dating to c. 1350, kept at the National Library of Sweden in Stockholm together with the Gutalag, the legal code of Gotland. It was written in the Old Gutnish language, a variety of Old Norse.
The Snake-witch (Swedish: Ormhäxan), Snake-charmer (Swedish: Ormtjuserskan) or Smiss stone (Swedish: Smisstenen) is a picture stone found at Smiss, När socken, Gotland, Sweden.