"Heartkiller" is a song by Finnish rock band HIM.

It is the third track on their seventh studio album Screamworks: Love in Theory and Practice (2010), and was released in December 2009 as the second single from the album.

[1] The music video for "Heartkiller" premiered on the band's MySpace page on January 7, 2010,[2] and appeared on their official website and YouTube page a day later.