Theodore Walter Sepkowski, born Szepkowski (November 9, 1923 – March 8, 2002) was an American professional baseball player.

Born in Baltimore, Maryland, he played outfield and three infield positions as a minor leaguer,^[1] and appeared in 19 Major League Baseball games as a utility player for the Cleveland Indians (1942; 1946–1947) and New York Yankees (1947). He batted and threw right-handed and was listed at 5 ft 11 in (1.80 m) and 190 lb (86 kg).

Sepkowski's active career extended from 1942–1955, with the 1943–1945 seasons missed because of service in the United States Coast Guard during World War II.^[2] He broke into the game with his hometown Baltimore Orioles of the International League, then a Cleveland farm club, and saw his first action in the Majors on September 9, 1942, when he was Cleveland's starting second baseman in a 5–4 defeat at the hands of the Philadelphia Athletics. Sepkowski collected his first MLB hit in five at bats that day but made two errors in the field.^[3]

He spent most of 1946 with the Double-A Oklahoma City Indians before another late-season recall, then started 1947 with Cleveland before his contract was sold to the Yankees on June 3. He appeared in two games for the Yanks as a pinch runner, then returned to the minors for the remainder of his career. As a Major Leaguer he appeared as a third baseman and second baseman for two games each, and as a right fielder in one contest. His six MLB hits included two doubles.