Andrew G. Clark (born 1954) is an American population geneticist.

He is currently Jacob Gould Schurman Professor of Population Genetics in the Department of Molecular Biology and Genetics and a Nancy and Peter Meinig Family Investigator at Cornell University.

[1][2] He is the current head of the Graduate Computation Biology field.

[3] He is also co-director of Cornell's Center for Comparative and Population Genomics and a member of a working group for the National Human Genome Research Institute.

[2] Clark's laboratory group researches genetic variation and adaptation using both human data and the laboratory model Drosophila melanogaster.