Lasse Stefanz is a Swedish dansband formed in Kristianstad in 1967. The band was popular during the 1980s. The band was formed by Hans Sigfridsson, Lars Sigfridsson and Olle Jönsson. Later members are Christer Ericsson, Anders Pettersson and Gunnar Nilsson. Olle Jönsson is the singer, as well as the ex-drummer. Lasse Stefanz had hits with songs as "Oh, Julie" and released albums as Peppelinos Bar. 1989-1990, Lasse Stefanz and Christina Lindberg had a Svensktoppen hit with the song "De sista ljuva åren". In 1989, Lasse Stefanz was awarded a Grammis for "Dansband of the year".
The band participated in Melodifestivalen 2011 with the song "En blick och något händer." They participated in Melodifestivalen 2024 with "En sång om sommaren", being eliminated from their heat on 24 February 2024.