Frank Oliver Dupee (April 29, 1877 – August 14, 1956) was a pitcher in Major League Baseball.
Dupee's minor league records are fragmentary, but according to research done by the Society for American Baseball Research, Dupee had pitched well enough in the 1901 season in the minors (a 10–6 record with two teams in the New England League) to warrant his call-up.
[2] However, his inability to throw strikes meant that Dupee was sent back down to the minors in September 1901, and sold to the New York Giants in the off-season.
Dupee played as a semi-regular for four different New England League teams in the 1902 season, appearing more often as an outfielder than as a pitcher.
Dupee spent a total of 13 seasons in the minors as a pitcher, never getting a shot at the majors again.