Lawrence Calvin Demery (born June 4, 1953) is an American former Major League Baseball pitcher. He played all or part of four seasons in the majors, from 1974 until 1977, for the Pittsburgh Pirates. A native of Bakersfield, California, Demery was the son of fellow major leaguer Art Demery. He played baseball at Wasco High School and later at Locke High School in Los Angeles, where he threw two no-hitters. Demery played college baseball at Nebraska and was drafted by the Pirates in 1972. He began his professional career that year with the Gastonia Pirates and walked more batters than any other pitcher in the Western Carolinas League. He spent most of the following season in the Carolina League, which he led with fourteen complete games.