Alejandro Alonso Núñez (born 20 August 1951) is a Spanish politician.
Married with two daughters, Alonso Núñez is a qualified veterinarian. He was a government official of the Cuerpo Nacional de Veterinarios (National Body of Veterinarians), and served as an advisor of Industry in Castilla-La Mancha from 1993 — 1996, as well as an advisor for Agriculture and Environment in Castilla-La Mancha from 1996 — 2003. Earlier he served as advisor to the Presidency of Castilla-La Mancha from 1987 — 1993.