Héctor Melesio Cuén Ojeda (October 25, 1955 – July 25, 2024) was a Mexican chemist, pharmacist, biologist and politician.

Cuén Ojeda was born on October 25, 1955, in Badiraguato, Sinaloa, Mexico.

[1] He studied at the Autonomous University of Sinaloa, where he earned a PhD.

[2][3] Cuén Ojeda died on July 25, 2024, after being shot in his vehicle near Culiacán.

[2] On 11 August 2024 the federal attorney-general's office announced it was investigating a possible connection between Cuén Ojeda's murder and the Sinaloa drug-traffickers Ismael Zambada and Joaquín Guzmán López, who were taken into custody in the United States later that day in circumstances that remain unclear.