Pia Jasmin Guerra is an American-born Canadian comic book artist and editorial cartoonist, best known for her work as co-creator and lead penciller on the Vertigo title Y: The Last Man.

[4] At the age of 10, Guerra's cousin visited from Queens and introduced her to comics by leaving his issue of The Uncanny X-Men #129 on a coffee table in her house.

As her plans shifted, Guerra made the decision to forgo secondary education and instead focus on pursuing a career in comics.

[9][10] In April 2022, Guerra was reported among the contributors to Operation USA's benefit anthology book, Comics for Ukraine: Sunflower Seeds, a project spearheaded by IDW Publishing Special Projects Editor Scott Dunbier, whose profits would be donated to relief efforts for Ukrainian refugees resulting from the February 2022 Russian invasion of Ukraine.

Guerra currently resides in Vancouver, Canada, and is married to writer and comedian Ian Boothby, with whom she does cartoons for Go Comics, Instagram and the New Yorker.