Thirsty Merc are an Australian rock band formed in 2002 in Sydney, Australia. The band consists of Rai Thistlethwayte vocals/guitar/keyboards, Phil Stack (bass guitar), Karl Robertson (drums), and Matt Smith (guitar).
Thirsty Merc have released one EP entitled First Work, and 3 studio albums; Thirsty Merc, Slideshows, and Mousetrap Heart. The band has sold over 200,000 albums, has toured extensively around Australia, and have received heavy airplay in Australia on an impressive number of songs. After breaking through onto the Australian music scene they were nominated for four ARIA Awards in 2005 and Rai was nominated for Song of the Year at the APRA Awards in 2008 for Thirsty Merc's top 2 airplay hit "20 Good Reasons".