Roy Joseph Cullenbine (October 18, 1913 – May 28, 1991) was an American professional baseball outfielder and first baseman.

He played ten seasons in Major League Baseball (MLB) for the Detroit Tigers, Brooklyn Dodgers, St. Louis Browns, Washington Senators, New York Yankees, and Cleveland Indians between 1938 and 1947.

This on-base percentage ranks 38th best in major league history, higher than many Hall of Fame legends, including Honus Wagner, Joe DiMaggio, Willie Mays and Hank Aaron.

His minor league career ran from 1932 to 1937, for Shreveport, Louisiana; Greenwood, Mississippi; Springfield, Illinois; Beaumont, Texas; and Toledo, Ohio.

[1] After starting his major league career in 1938-39 for his hometown Detroit Tigers, he was among several major league players declared free agents in January 1940 by Commissioner Kenesaw Mountain Landis and was given a $25,000 bonus to sign with the Brooklyn Dodgers the following month.

[2] After playing only 22 games for the Dodgers, he was traded in May 1940 to the St. Louis Browns for Joe Gallagher.

This was a stroke of luck for Cullenbine, sending him to the 1942 World Series with a .300 on-base percentage and three runs scored for the Yanks, who were upset 4-1 by the overachieving St. Louis Cardinals.

Despite hitting only .227 in the Series, he drew eight walks for a .433 on-base percentage and scored five runs.