The Slough band announced their break-up on Twitter, thanking fans for an "unbelievable journey".
The announcement was made just after 12pm today (April 1), prompting many fans to believe that it was an April Fool's joke. However, a spokesperson later confirmed the news, reports NME.
"Thank you to everyone that has ever supported us or believed," they wrote. "It has been an unbelievable journey. This is us signing off. Goodbye."
The band posted a clip for a new track, adding: "We'll leave you with this last song. We recorded it a couple of months ago."
In reference to their recent nomination for 'Worst Band' at the NME Awards, they said: "And as for NME. Shame on you."
Viva Brother were forced to change their band name from Brother last year after losing a legal battle with an Australian Celtic band.
Listen to Viva Brother's 'I Don't Want To Be Loved' below: