James Evans "Grasshopper Jim" Whitney (November 10, 1857 – May 21, 1891) was an American professional baseball player. He was a right-handed pitcher over parts of ten seasons (1881–1890) with the Boston Red Caps/Beaneaters, Kansas City Cowboys, Washington Nationals, Indianapolis Hoosiers and Philadelphia Athletics (AA). He was the National League strikeout champion in 1883 with the Boston Beaneaters.