Gary Stormo (born 1950) is an American geneticist and currently Joseph Erlanger Professor in the Department of Genetics and the Center for Genome Sciences and Systems Biology at Washington University School of Medicine in St Louis.

[2] Stormo initially majored in physics as an undergraduate at the California Institute of Technology, but switched to biology in his junior year.

[2][3] Stormo's research combines experimental and computational approaches to understand regulation of gene expression.

His computational work involves analysis of these interactions and developing pattern recognition algorithms to discover regulatory sites in DNA and RNA.

In 1982, Stormo and his colleagues introduced the Position Weight Matrix (PWM), a now commonly used representation of motifs (patterns) in biological sequences.