Deadly Women is an American true crime documentary television series produced by Beyond International Group and airing on the Investigation Discovery (ID) network.The series focuses on murders committed by women. It is hosted by former Federal Bureau of Investigation (FBI) criminal profiler Candice DeLong and narrated by Lynnanne Zager.

Deadly Women was first broadcast in 2005 as a three-part miniseries under the subtitles: “Obsession”, “Greed”, and “Revenge”. It was revived as a regularly scheduled series and began airing on December 24, 2008. Two major changes were made: Lynnanne Zager replaced original narrator Marsha Crenshaw, and the number of cases in each episode was reduced from four to three. The episodes were also recorded and presented in a widescreen format. The series ended in 2021, after 14 seasons.

Dubbed versions are also produced. A Spanish language version airs on Discovery en Español under the title Las Verdaderas Mujeres Asesinas (True Killer Women); an Italian language version airs on Real Time Italy under the title Donne mortali (a literal translation of the English title).