Percival Sumner "Pop" Rising (January 24, 1877 – January 28, 1938) was an American right fielder in Major League Baseball who played briefly for the Boston Americans during the 1905 season.

Rising was born in Industry, Pennsylvania on January 24, 1877.

His contract was purchased by the Boston Americans from the New London, Connecticut team for $1,200 on August 8, 1905.

In six outfield appearances, he never committed an error in nine chances for a perfect 1.000 fielding percentage.

Rising died at the age of fifty-six in Rochester, Pennsylvania on January 28, 1938.