Mariano Marcos y Rubio (April 21, 1897 – March 8, 1945) was a lawyer and a politician from Ilocos Norte, Philippines.
A Congressman from 1925 to 1931, he is best known for being the father of Ferdinand Marcos, who was President of the Philippines from 1965 to 1986.
There are some conflicting accounts about the exact nature of his death, with one version suggesting he was executed by the Japanese in Bacnotan, La Union, and another saying that he was killed by guerrillas related to political rival Julio Nalundasan as a collaborator.His name was honored as part of the names of two Philippine state universities: the Mariano Marcos State University in Ilocos Norte, and the Don Mariano Marcos Memorial State University in La Union.
He was also honored by having the town of Marcos, Ilocos Norte named after him.