Guillermo Vinluan de Vega (February 1, 1931 – October 27, 1975), nicknamed Gimo, was a presidential assistant of Philippine president Ferdinand E. Marcos with the rank of cabinet secretary.

As presidential assistant, Secretary de Vega was in charge of preparing documents for the president's appointment of officials of the executive and judicial departments, among other duties.

He obtained his Doctor of Philosophy in History from the University of Sindh in Hyderabad, Pakistan in 1962 as an exchange scholar of the Southeast Asia Treaty Organization (SEATO).

The archives of De Vega are housed at the Technological Institute of the Philippines, which granted university scholarships annually in his name from 1976 to 2011.

Mowelfund was the beneficiary of the popular annual Metro Manila Film Festival first held in 1975 when it was founded by De Vega together with former President Joseph Ejercito Estrada, who was then the President of the Philippine Motion Pictures Association, Mayor of San Juan town, and a film actor.

Yet the convicted gunman Paulino Arceo had apparently smuggled in an unlicensed Smith & Wesson revolver in a manila envelope.