Bad English was an American/British hard rock supergroup formed in 1987. It reunited Journey keyboardist Jonathan Cain with singer John Waite and bassist Ricky Phillips, his former bandmates in the Babys, along with Journey guitarist Neal Schon and drummer Deen Castronovo. The band is known for their hit single "When I See You Smile", which peaked at number 1 on the Billboard Hot 100 in November 1989.

The Dead Daisies are an Australian-American hard rock band formed in 2012 in Sydney, Australia. The band has sometimes been referred to as a supergroup, as its membership has included a number of musicians who have performed with other highly notable acts, such as Guns N' Roses, Noiseworks, Rob Zombie, The Cult, The Rolling Stones, Thin Lizzy and Whitesnake. The band has had substantial changes of membership since its formation, having only its rhythm guitarist David Lowy as a continuing founding member since 2015.