Hector Beltran Leyva, alias "El H," was the head of the Beltran Leyva Organization (BLO) in Mexico. Once one of the most feared groups in the region, the BLO’s top leadership has been decimated in recent years. Until he was arrested on October 1, 2014, Hector was the last remaining Beltran Leyva still alive or at large.

Hector Beltran Leyva ran an organization that he called the South Pacific Cartel. Its central point of operations is the Acapulco Cuernavaca corridor, an area in near constant dispute because of its value for drug trafficking organizations. Prior to his arrest, Hector saw  two brothers, Carlos and Alfredo, go to jail and another, Arturo, die in a hail of bullets in December 2009 at the hands of the Mexican Marines. Hector ran what was left of the Beltran Leyva organization in conjunction with the Zetas, the group’s former rivals who split from the Gulf Cartel to form their own drug trafficking organization. Before he took over as leader, Hector previously operated the financial wing of the BLO and was responsible for keeping politicians and police on the payroll. Nevertheless, Hector was not the obvious choice to become his group's leader, and his tenure saw the BLO's power decline significantly.

While leader of the BLO, Hector battled many former allies, including members of the Sinaloa Cartel and members of his former security wing run by Edgar Valdez Villarreal, alias "La Barbie," who was arrested in August 2010.