| Kristen Saacke-Blunk (Department: Agricultural Economics and Rural Sociology) • Director, Agriculture and Environment Center • Senior Extension Associate |
| Carolyn Sachs (Department: Agricultural Economics and Rural Sociology) • Professor of Rural Sociology |
| Demian Saffer (Department: Geosciences) • Associate Professor of Geosciences |
| Gary J. San Julian (Department: School of Forest Resources) • Professor of Wildlife Resources Extension Wildlife Specialist • Extension Wildlife Specialist |
| Elsa Sanchez (Department: Horticulture) • Assistant Professor of Horticultural Systems Management |
| Matt Sanderson (Department: Pasture Systems and Watershed Management Research Unit) • Research Agronomist |
| Domenic Santavicca (Department: Mechanical and Nuclear Engineering) • Professor of Mechanical Engineering |
| Robert Santoro (Department: Mechanical and Nuclear Engineering) • George L. Guillet, Professor of Mechanical Engineering • Director of the Propulsion Engineering Research Center |
| Michael Saunders (Department: Entomology) • Professor of Entomology |
| Alan Scaroni (Department: Energy and Mineral Engineering) • Professor, Energy and Geo-Environmental Engineering • EMS Associate Dean for Graduate Education and Research |
| Stephen Schaeffer (Department: Biology) • Associate Professor of Biology |
| Barry Scheetz (Department: Mechanical and Nuclear Engineering) • Professor of Materials, Civil and Nuclear Engineering • Interim Director, Center for Dirt and Gravel Road Studies |
| John P. Schmidt (Department: Pasture Systems and Watershed Management Research Unit) • Soil Scientist |
| Harold Schobert (Department: Energy and Mineral Engineering) • Professor of Fuel Science |
| Stephan Schuster (Department: Biochemistry and Molecular Biology) • Associate Professor of Biochemistry and Molecular Biology |
| Ayusman Sen (Department: Chemistry) • Professor and Head, Department of Chemistry |
| Tom Seybert (Department: Civil and Environmental Engineering) • Associate Professor of Civil Engineering in Surveying |
| Robert D. Shannon (Department: Agricultural and Biological Engineering) • Associate Professor of Agricultural Engineering |
| Beth Shapiro (Department: Biology) • Assistant Professor of Biology |
| Priya Sharma (Department: Instructional Systems) • Assistant Professor of Education (Instructional Systems) |
| Kendra Sharp (Department: Mechanical and Nuclear Engineering) • Assistant Professor of Mechanical Engineering |
| William Sharpe (Department: School of Forest Resources) • Professor Emeritus of Forest Hydrology • Water Resources Extension |
| Couduvalli Shashikant (Department: Dairy and Animal Science) • Associate Professor of Molecular & Developmental Biology |
| Katriona Shea (Department: Biology) • Associate Professor of Theoretical Applied Ecology |
| David Shearer (Department: Penn State Institutes of Energy and the Environment) • Field Operations Specialist, Center for Dirt and Gravel Roads Studies |
| Erin Sheets (Department: Chemistry) • Assistant Professor of Chemistry |
| Lysle Sherwin (Department: School of Forest Resources) • Director, Center for Watershed Stewardship |
| James Shortle (Department: Agricultural Economics and Rural Sociology) • Distinguished Professor of Agricultural and Environmental Economics • Director, Environment and Natural Resources Institute |
| Mark Shriver (Department: Anthropology) • Associate Professor of Biological Anthropology |
| Kamini Singha (Department: Geosciences) • Assistant Professor of Geosciences |
| Alok Sinha (Department: Mechanical and Nuclear Engineering) • Professor of Mechanical Engineering |
| John Skelly (Department: Plant Pathology) • Professor Emeritus of Plant Pathology |
| R. Howard Skinner (Department: Pasture Systems and Watershed Management Research Unit) • Physiological Plant Ecologist |
| Tania Slawecki (Department: Science, Technology, and Society Program) • Assistant Profesor of Science, Technology and Society • Research Assistant, Materials Research Institute |
| Arthur Small (Department: Meteorology) • Associate Professor of Meteorology |
| Sanford S. Smith (Department: School of Forest Resources) • Lecturer in Forest Resources Natural Resources and Youth Extension Specialist • Natural Resources and Youth Extension Specialist |
| Paul Smith (Department: School of Forest Resources) • Professor of Forest Products Marketing |
| Erica Smithwick (Department: Geography) • Assistant Professor of Geography • Director, LEAPS (Landscape Ecology at Penn State) |
| Chunshan Song (Department: Energy and Mineral Engineering) • Professor of Fuel Science • Director, EMS Energy Institute • Associate Director, PSIEE |
| Todd Sowers (Department: Geosciences) • Research Associate, Department of Geosciences |
| James Spayd (Department: Penn State Institutes of Energy and the Environment) • Technical Coordinator II - PASDA |
| Jelena Srebric (Department: Architectural Engineering) • Associate Professor of Architectural Engineering |
| Jay Stauffer (Department: School of Forest Resources) • Distinguished Professor of Ichthyology |
| Richard Stehouwer (Department: Crop and Soil Sciences) • Associate Professor of Environmental Soil Science |
| Kim Steiner (Department: School of Forest Resources) • Professor of Forest Biology • Director, The Arboretum at Penn State |
| Richard E. Stevenson (Department: Plant Pathology) • Senior Research Assistant, Plant Pathology • Senior Research Assistant, Air Pollution - Forest Effects Laboratory |
| Susan Stewart (Department: Applied Research Laboratory) • Research Associate, Applied Research Laboratory |
| Richard Storrow (Department: Dickinson School of Law) • Professor of Law |
| Charles H. Strauss (Department: School of Forest Resources) • Director, School of Forest Resources • Professor of Forest Economics |
| Ann M. Swinker (Department: Dairy and Animal Science) • Extension Horse Specialist |
| Bryan Swistock (Department: School of Forest Resources) • Water Resources Extension Associate |
| David Sylvia (Department: Crop and Soil Sciences) • Head, Crop and Soil Sciences • Professor of Soil Microbiology |