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