Cold Justice is an investigative true crime series originally broadcast on TNT and currently on Oxygen. The series, produced by Dick Wolf, follows former Harris County, Texas prosecutor Kelly Siegler and a team of investigators as they reopen unsolved murder cases with the consent and assistance of local law enforcement. Crime scene investigator Yolanda McClary, a veteran of the Las Vegas Metro police, also appeared on the series; McClary had earlier been the inspiration for Catherine Willows, the character portrayed by Marg Helgenberger on the series CSI.

As of July 2021, the team has helped to generate 49 arrests and 21 convictions, in addition to four confessions, three guilty pleas and three murder convictions.

Although TNT made no official announcement, McClary wrote on her personal Facebook page in mid-2016 that the series was canceled. She later said that the production company is shopping the series to other networks. In February 2017, it was announced that Cold Justice had been acquired by Oxygen and resumed broadcasts on July 22, 2017. The sixth season aired from July 10, 2021, to January 1, 2022. In May 2023, Oxygen announced the series would return in 2024. In May 2024, Oxygen announced the series would return for its eighth season in 2025.