Henry Joseph Simon (August 25, 1862 - January 1, 1925) was a Major League Baseball outfielder. He played two seasons in the majors, 1887 and 1890, all in the American Association. In 1887, he played in three games for the Cleveland Blues, then in 1890 he split the season between the Brooklyn Gladiators and Syracuse Stars. Simon's minor league baseball career spanned twenty seasons, from 1885 until 1904.