| Author(s) | Organization(s) | Session |
| Radniecki, Tyler | Oregon State Univeristy, United States of America | Stormwater: Metals Treatment Resource Recovery: Gas and Energy |
| Raheem, Yacoub | AECOM, United States of America | Stormwater Presenter |
| Rahman, Sheikh Mokhlesur | Northeastern University, United States of America | Resource Recovery: Phosphorus |
| Rajagopalan, Ganesh | Kennedy Jenks Consultants, United States of America | Resource Recovery: Gas and Energy |
| Rambin, Austin | Murraysmith, Inc. | Planning, Resiliency, Climate Science: Biosolids Planning Presenter |
| Ramirez, Joy | Clean Water Services, United States of America | Operations and Maintenance Presenter |
| Randolph, Pamela | City of Edmonds | Find The Leader Within You Presenter Regulatory Challenges Presenter Utility Management:: Performance Contracting Presenter Utility Management:: Performance Contracting Presenter Leadership, Social Equity and Workforce Development: Leadership Presenter |
| Reed, Maria Claudia | Brown and Caldwell | Wastewater 101: Secondary Treatment and Disinfection Presenter |
| Reid, Terry | Aqua-Aerobics Systems, Inc. | Innovation and the Future: Pilot Testing Results Resource Recovery: Reclaimed Water |
| Reininga, Krista | Brown and Caldwell | Planning, Resiliency, Climate Science: Resiliency Presenter |
| Reisinger, Daniel | Carollo | Construction /Alternative Delivery Presenter |
| Retzlaff, Ryan | Brown and Caldwell, United States of America | Stormwater: Modeling Presenter |
| Reynolds, Haydn | StreamlineAM, United States of America | Utility Management: Infrastructure Planning |
| Reynolds, Shannon | City of Portland Bureau of Environmental Services | Planning, Resiliency, Climate Science: Resiliency Presenter |
| Reynolds, Todd | Kennedy Jenks | Resource Recovery: Reclaimed Water |
| Rice, Trish | City of Sweet Home, Oregon | Planning, Resiliency, Climate Science: Biosolids Planning Presenter |
| Rinner, Jessica | Clackamas County Water Environmental Service | Planning, Resiliency, Climate Science: Planning Presenter |
| Roe, Patrick | HDR Engineering, Inc., United States of America | Wastewater 101: Membrane Treatment Presenter |
| Roundy, Eric | Keller Associates, Inc., United States of America | Wastewater 101: Solids Treatment Presenter Regulatory Challenges Session Chair Regulatory Challenges Session Chair |
| Roundy, Shad | Jacobs | Planning, Resiliency, Climate Science: Planning Presenter |
| Rubstello, Les | City of Lynnwood | Construction /Alternative Delivery Presenter |
| Ryan, Bill | City of Portland, Bureau of Environmental Services | Utility Management Presenter |
| Rybel, Vince | Jacobs, United States of America | Leadership, Social Equity and Workforce Development: Workforce Development Presenter |