Howard L. Snell (born 1953) is an American ecologist and professor at the University of New Mexico.
His research and conservation efforts have focused on the Galapagos land iguanas, which were in danger of extinction.
He is currently a full professor at UNM as well as the curator of amphibians and reptiles at the Museum of Southwestern Biology.
Most of his research has been on lizards, especially land iguanas, in the Galápagos Islands, comparing individual variation and differential phenotypic success to identify components of life history, morphology, and behavior susceptible to human activity.
Specific projects include researching co-variation of life-history components among Galápagos organisms (primarily reptiles) and their susceptibility to extirpation and examining correlations between spatial patterns of extinction, distribution of organisms, and human activity.
He has also developed effective methods for ecological monitoring and improving responses by management agencies.