Miguel del Barco (Casas de Millán, 1706– Bologna, 1790) was a Jesuit missionary in Baja California, Mexico and wrote major contributions to the peninsula's history and ethnography.
Del Barco was born at Casas de Millán in Cáceres, Extremadura, Spain and earned a degree at the University of Salamanca.
He oversaw the construction of the outstanding stone church at San Javier and served as visitador, the highest administrative office for the California missions, in 1750–1754 and 1761–1763.
Prior to his exile, he was perhaps the author of an anonymous Adiciones to the manuscript Descripción de la California.
In Bologna, apparently in the 1770s, he composed a lengthy manuscript of additions and corrections to the previously published history of the peninsula by Miguel Venegas.