Doña María de la Encarnación Álvarez de Toledo y Gonzaga, marquesa de Móndejar (1755-1821), was a Spanish courtier. She was the Camarera mayor de Palacio to the queen of Spain, Maria Isabel of Portugal, in 1816–1818.
She was born to Antonio Álvarez de Toledo y Pérez de Guzmán, and Maria Antonia Dorotea Gonzaga.
She married in 1774 to Juan de la Cruz Belvis de Moncada y Pizarro.
She was appointed to the post of Camarera mayor de Palacio to queen in 1814.