| Dara Noonan | Graduate Student | Graduate Student | 
              
                      | Kate O'Neill | Professor of Global Environmental Governance and the Global/Local Politics of Wastes and Recycling; Associate Dean for Instruction and Student Affairs for the Rausser College of Natural Resources | Faculty, Society & Environment | 
              
                      | Dara O'Rourke | Associate Professor | Faculty, Society & Environment | 
              
                      | Mariska Obedzinski | Graduate Student | Graduate Student | 
              
                      | Miguel Ochoa | Graduate Student | Graduate Student | 
              
                      | Olusola Akintayo Ogunyewo | Postdoctoral Researcher | Postdoctoral Researcher | 
              
                      | Daniel Oliveira | Graduate Student | Graduate Student | 
              
                      | Kaggie Orrick | Postdoctoral Researcher | Postdoctoral Researcher | 
              
                      | Reid T Oshiro | Postdoctoral Researcher | Postdoctoral Researcher | 
              
                      | George Oster |  | In Memoriam | 
              
                      | Megan Pagliaro | Graduate Student | Graduate Student | 
              
                      | Céline Pallud | Professor | Faculty, Ecosystem Sciences | 
              
                      | Nikolas Panopoulos | Professor Emeritus | Emeriti | 
              
                      | John Richard Parmeter |  | In Memoriam | 
              
                      | Stephanie Pau | Associate Professor | Faculty, Ecosystem Sciences | 
              
                      | Nancy Lee Peluso | Professor of the Graduate School | Professors of the Graduate School | 
              
                      | Ryan Perry | Postdoctoral Researcher | Postdoctoral Researcher | 
              
                      | Alyssa Phillips | Postdoctoral Researcher | Postdoctoral Researcher | 
              
                      | Crossley Pinkstaff | Graduate Student | Graduate Student | 
              
                      | Michael Polson | Associate Research Scientist & Director of Cannabis Research Center | Affiliates |