John William Kraus (April 26, 1918 – January 2, 1976) was an American professional baseball pitcher who appeared in Major League Baseball in 70 games for the Philadelphia Phillies (1943 and 1945) and New York Giants (1946). In 1944, Kraus served in the United States Army during World War II. In his 70 games pitched, 39 started, he lost 15 of 40 decisions and posted an ERA of 4.00. In 3061⁄3 innings pitched, he allowed 318 hits, 133 bases on balls, and 136 earned runs; he fanned 83. He died in San Antonio, aged 57, on January 2, 1976.