Raymond Blemker (August 9, 1937 – February 15, 1994) was an American professional baseball player. The left-handed pitcher appeared in a single Major League game as a member of the Kansas City Athletics during the 1960 season. Blemker was listed as 5 feet 11 inches (1.80 m) tall and 190 pounds (86 kg) during his pro baseball career. He signed with the Athletics in 1959 and spent his entire four-season career in the Kansas City organization. Blemker died at St. Mary's Medical Center in Evansville, Indiana on February 15, 1994 at the age of 56.