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. He threw right-handed (unknown batting side). He was purchased by the Boston Americans from the New London, Connecticut team for $1,200 (August 8, 1905). Rising died in Rochester, Pennsylvania at age 56.