The Province of Pánuco was a province of the Spanish colony of New Spain. It was probably discovered by Amerigo Vespucci in 1498, and later by Juan de Grijalva. It is located on the Mexican gulf coast centered on Santiestebán de Pánuco, from the river of Tuxpan and extending into the current state of Tamaulipas. Originally inhabited by Huastecs, it was claimed both by conquistador Hernán Cortés who sent Francisco de Montejo to claim the area and by Francisco de Garay, governor of Jamaica, who sent Alonso Alvarez de Pineda. The province was the object of a power struggle between supportes of Cortés and his opponents, first divided into encomiendas and allotted to Cortés supporters. In 1525 Nuño de Guzmán of the Anti-Cortés faction was appointed governor of Pánuco and he stripped Cortés' supporters of their encomienda's and undertook a policy of violent slave raids against the local Indians.
- Chipman, Donald E. (1967). "2". Nuno de Guzman and the Province of Panuco in New Spain, 1518-1533. Glendale, California: Arthur H. Clark Co. Invalid