René Monteagudo Miranda (March 12, 1916 – September 14, 1973) was a Major League Baseball pitcher and outfielder who played with the Washington Senators (1938, 1940, 1944) and Philadelphia Phillies (1945).

Signed by the Senators, he debuted as a pitcher on September 6, 1938, but bothered by a sore arm, he switched to the outfield.

In 1946, Monteagudo was one of the ballplayers blackballed by Commissioner Happy Chandler after leaving the majors to play in the Mexican League.

In a four-season major league career, Monteagudo was a .289 hitter (78-for-270) with 21 RBI, 32 runs, nine doubles, one triple, and two stolen bases in 156 games.

As a pitcher, he posted a 3–7 record with 93 strikeouts, a 6.42 ERA, two saves, and 168 innings in 46 games (11 as a starter).