Marcus Genucius Augurinus L. f. L. n. (or "Marcus Genucius Augurinus, son of Lucius, grandson of Lucius", see Roman filiation), brother of Titus Genucius Augurinus, was a statesman of the Genucia gens of ancient Rome who lived in the 5th century BCE.

Augurinus was consul in 445 BCE, the year in which the office of consular tribune