Hello Heartache is a song recorded by Canadian singer Avril Lavigne for her self-titled fifth studio album. It was written by Lavigne and David Hodges, and produced by Hodges. Musically, "Hello Heartache" is one of the album's darkest songs, which was recognized by Jason Lipshutz of Billboard, who commented, "The ghouls crowing 'la-la-la' in the background amplify Lavigne's pain, and although the sentiment at the heart of 'Hello Heartache' is a simple one, it's no less impactful." The song was also intended to be on Lavigne's previous album but was cut from it. New music was created for the song before it appeared on her fifth record.
The song received mixed to positive reviews from critics, who complimented the seriousness of the track but found it to be a weak addition to the album's track listing. Sam Lansky of Idolator compared "Hello Heartache" to the work of Skyler Grey, while Bradley Stern of MuuMuse compared the angry tone of the song to the work of Alanis Morisette, as well as Lavigne's debut single "Complicated" in a hugely positive review of the track.