Valentim dos Santos de Loureiro ComM (born 24 December 1938 in Calde, Viseu) is a Portuguese politician and former football chairman of Boavista and Portuguese League for Professional Football.

He was involved in the Apito Dourado sports scandal, for which he was sentenced by the Courts of Portugal.

His successor as President of the Portuguese League for Professional Football and chairman of Boavista was his son João Loureiro who held the office from 1997 to 2007.

Valentim Loureiro briefly attended the Law School of the University of Coimbra before moving on to a military career.

[1] Valentim Loureiro was investigated by the police and formally accused in the Apito Dourado scandal.