| René Monteagudo | |
| Position: | Pitcher / Outfielder |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 12 March 1916 |
| Birth Place: | Havana, Cuba |
| Death Place: | Hialeah, Florida |
| Debutleague: | MLB |
| Debutdate: | September 6 |
| Debutteam: | Washington Senators |
| Finalleague: | MLB |
| Finaldate: | September 30 |
| Finalteam: | Philadelphia Phillies |
| Statleague: | MLB |
| Stat1label: | Batting average |
| Stat1value: | .289 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | Runs batted in |
| Stat3value: | 21 |
| Stat4label: | Win–loss record |
| Stat4value: | 3–7 |
| Stat5label: | Strikeouts |
| Stat5value: | 93 |
| Stat6label: | Earned run average |
| Stat6value: | 6.42 |
| Teams: |
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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). Monteagudo threw and batted left-handed.
Monteagudo was born in Havana, Cuba. 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 1945, for the Phillies, he was the most used and most successful pinch-hitter in the league, going 18-for-52 (.346). He also pitched 14 games in relief. 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). René Monteagudo died in Hialeah, Florida at the age of 57.
His son Aurelio Monteagudo was a right-handed screwball pitcher who played in Major League Baseball and Venezuelan Professional Baseball League.