Cyrus Edward Swartwood (January 12, 1859 – May 15, 1924) was an American professional baseball player and umpire.

He played all or part of nine seasons in Major League Baseball, primarily as a right fielder and first baseman.

Swartwood played for the Buffalo Bisons (1881), Pittsburgh Alleghenys/Pirates (1882–84, 1892), Brooklyn Grays (1885–87), and Toledo Maumees (1890).

A native of Rockford, Illinois, he stood 5 feet 11 inches (1.80 m) and weighed 198 pounds (90 kg).

[1] Swartwood died at the age of 65 in Pittsburgh, Pennsylvania, and is interred at Union Dale Cemetery in that city.