Christos George Pelekoudas (January 23, 1918 – November 30, 1984) was an American umpire in Major League Baseball who worked in the National League from 1960 to 1975.
Born in Chicago into a family of 14 children, Pelekoudas graduated from Crane Tech High School. He had an unsuccessful tryout with the St. Louis Cardinals as a player in 1934. He began umpiring while serving as an Army Special Services officer during World War II, and eventually worked his way up to the NL after stops in the Eastern Shore (1948), Interstate (1949), Western (1950–52) and Pacific Coast Leagues (1953–59). He worked in the World Series in 1966 and 1972, serving as crew chief the second time, and in the All-Star Game in 1961 (second game), 1967 and 1975. He also officiated in the National League Championship Series in 1969 and 1973. He is perhaps best remembered for ordering an apparent Hank Aaron home run nullified on August 18, 1965 because Aaron stepped out of the batter's box when he made contact; the umpire had warned Aaron on the previous two pitches. As a result, Aaron's home run record eventually stood at 755, instead of 756.