Joaquín Marcó Figueroa (4 February 1892 – 18 October 1956) was a Chilean civil engineer, public servant, and writer.

For his undergraduate studies, he went to the University of Chile in Santiago, where he graduated as a civil engineer in 1917.

His justification was written as such in the 1943 book produced by "La Casa de Moneda": "Naturally, if it is desired to avoid the inconveniences that other countries in South America have had with their confusing systems of metallic divisional coins, it would be preferable, in the opinion of the undersigned, to establish (different) weights and diameters.

[5][6] After returning from his studies in Santiago to his native town of Copiapó, he was affected by staphylococcus aureus.

He died in 1956 in his home of the Cristóbal Colón avenue, after the bacteria impacted the valves in his heart due to the lack of digitoxin in the country.