Mainscream is the second studio album by Serbian hard rock band Cactus Jack, released in 2005.

With Mainscream Cactus Jack made a slight shift from their traditional hard rock style towards a more melodic hard rock sound.

The lyrics for the song "Glumica" ("Actress") were written by singer Bebi Dol.

[2] The album cover was designed by the band's old associate Dragoljub "Paja" Bogdanović,[2] who would in 2015 become the band's frontman.

[3] All songs written by Stevan Birak and Vladimir Jezidimirović except where noted.