Lydia Cacho Ribeiro (12 April 1963) is a Mexican journalist, feminist, and human rights activist. Described by Amnesty International as "perhaps Mexico’s most famous investigative journalist and women’s rights advocate", Cacho's reporting focuses on violence against and sexual abuse of women and children.

In 2004, her book Los Demonios del Edén created a nationwide scandal by alleging that several prominent businessmen had conspired to protect a pedophilia ring. In 2006, a tape emerged of a conversation between businessman Kamel Nacif Borge and Mario Plutarco Marín Torres, governor of Puebla, in which they conspired to have Cacho beaten and raped for her reporting.She received Olof Palme Prize in 2011.