Laurence Marvin Sandler (1929–1987) was a "leading Drosophila geneticist", active during the mid-20th century. Sandler is best known for his work establishing and elucidating the phenomenon of meiotic drive. (Meiotic drive is when one copy of a gene is passed on to offspring more than the expected 50% of the time.) In 1956, Sandler briefly joined the Biology Division at Oak Ridge National Laboratory, where Sandler and Dan Lindsley worked on sperm dysfunction.