Roy Lewis Patterson (December 17, 1876 – April 14, 1953) was an American pitcher in Major League Baseball.

Patterson started his professional baseball career for the Western League's St. Paul Saints in 1899.

On April 24, 1901, he became the first AL winning pitcher, as the other games that day were rained out.

He joined the American Association's Minneapolis Millers in 1908, pitching most of the next decade for them and winning over 20 games in four different seasons.

[2] Patterson took over his father's freight-hauling business after his baseball career ended.