Dag Vag is a Swedish band formed in 1978. The lead singer was Per Odeltorp (1948–2012), popularly known as Stig Vig. Their early punk sound became, after a while, increasingly more reggae-like. The band referred to it as "transcontinental rock-reggae". Their popularity peaked in the 1980s, but they are still active.

Dag Vag sometimes toured with Swedish punk band Ebba Grön and made a cameo in their documentary film Ebba the Movie.