Martín de Álzaga, Argentinian race car driver and pilot (d. 1982)

Martín 'Macoco' de Álzaga (25 January 1901 – 15 November 1982) was an Argentine racecar driver.

He was briefly married to model/actress Kay Williams who would eventually marry and widow actor Clark Gable.He died in Buenos Aires and is buried at the La Recoleta Cemetery.