Ava Lord is a fictional character in Frank Miller's Sin City universe, the title character in the graphic novel A Dame to Kill For. An ex-lover of Dwight McCarthy, she manipulates men with her good looks and an innocent facade for her own personal gain or amusement. An expert liar, she is considered a goddess by Manute, her towering manservant, and a "manipulative bitch" by Dwight. She represents the classic femme fatale, acting as a foil to Dwight's hard-boiled antihero.

A Dame to Kill For is a comic book limited series written and drawn by Frank Miller and first published by Dark Horse Comics in 1993. It is the second story in Miller's Sin City series, and the first to be published in miniseries format. It has since been reprinted in graphic novel format in four separate editions.