Questionable Content (abbreviated QC) is a slice-of-life (slice of life story) webcomic written and drawn by Jeph Jacques. It was launched on August 1, 2003; the 1600th strip was posted on February 12, 2010. Jacques currently makes his living exclusively from QC merchandising and advertising, making QC one of the few self-sufficient webcomics (list of self-sufficient webcomics). By 2004, Jacques was able to support himself and his future wife based on income from merchandise and advertising sales.

The plot centers on Marten Reed, an indie rock aficionado (Fan (person)); his roommate, Faye Whitaker; and Fayes boss, Dora Bianchi. Supporting characters include employees of the local coffee shop, neighbours and anthropomorphized (anthropomorphism) personal computers. QCs storytelling style combines romantic (Romance (love)) melodrama, sitcom (situation comedy), humor about indie rock music, and sexual or scatological humor (toilet humour). The artistic style has notably changed over the lifetime of the comic, as Jacques has been constantly refining his drawing methods. Whereas earlier strips were focused at a niche audience of indie music fans, the comic has since become more story- and character-driven.