The open air event covers seven evenings of entertainment in the city centre, kicking off on Friday 16 August with dance act Basement Jaxx. The 'Where's Your Head At?' hitmakers are well known for their impressive live shows.
Brett Anderson and co will perform on Saturday 24 August, just months after releasing their first album in 11 years.
It is the sixth year of Belsonic and organisers hope the popular event will bring people in to the Cathedral Quarter once again.
As well as alt rock fans, the gigs provide something for pop and folk enthusiasts, with Jake Bugg and Ben Howard at the top of the bill on 23 and 17 August respectively.
Folk act The Lumineers are currently on a sold-out European tour, but NI audiences have an extra chance to see them during Belsonic.
Meanwhile the August bank holiday will be a dance party, with Steve Angello, who has previously worked with chart toppers Swedish House Mafia.
Metal band Bullet For My Valentine will close the event on 26 August, when they will be joined by Sheffield-based metallers Bring Me The Horizon.
Although the big name bands have been revealed, many of the support acts are still under wraps.
Tickets for Belsonic 2013 go on sale on Friday 15 March at 9am priced from £27.50.