Jón Jósep Snæbjörnsson or Jónsi (born 1 June 1977) is an Icelandic singer and a former member of the band Í svörtum fötum ("In black clothing").

Jón Jósep also performed the opening theme song to the Icelandic children's television show LazyTown.

[citation needed] Jónsi is the nickname of Jón Jósep Snæbjörnsson, one of the most popular Icelandic male singers according to 2004 public vote.

After releasing the single "Nakinn" ("Naked") in spring 2001 they earned national recognition when the song reached number two on the Icelandic Chart.

He has repeatedly been awarded Male Vocalist of the Year and Best Live Performer by popular listeners' polls on radio stations.