| Ryerson University - Daphne Cockwell Health Sciences Complex | Complete | — | — | $115.1M |
| S Geiger Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $605K |
| Sables-Spanish Rivers Asset Management | Approved | — | — | $4K |
| Sacred Heart Catholic Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $3.0M |
| Sacred Heart Catholic Secondary School | Complete | State of Good Repair C03 | CW | $0 |
| Safety Program - H&S | Toronto Transit Commission | Health and Safety C01 | CW | $-1,000 |
| Saginaw Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $3.9M |
| Salarno Creek Bridge Rehabilitation | Approved | — | — | $10K |
| Saltfleet Public Secondary School | Complete | State of Good Repair C03 | CW | $4.6M |
| San Lorenzo Ruiz Catholic Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $1.6M |
| Sandgate Women's Shelter Upgrades and Repairs | Complete | Growth Related C05 | CW | $7K |
| SANITARY CAPACITY ASSESSMENT MODELLING | Wastewater Program | Service Improvement and Enhancement C04 | CW | $3K |
| Sauble Beach to Wiarton Trail Upgrade | Approved | — | — | $20K |
| Sault Ste. Marie Asset Management Program | Approved | — | — | $25K |
| Sault Ste. Marie Hub Trail System Project | Approved | — | — | $84K |
| Scadding Court Community | Complete | Service Improvement and Enhancement C04 | 10 | $263K |
| Scarborough Bluffs West Project: Eastern Beaches to Bluffer’s Park | active | parks | — | — |
| Scarborough Centre for Healthy Communities | Complete | State of Good Repair C03 | CW | $255K |
| Scarborough Subway Extension | Under Construction | Transit | Scarborough Centre | $3.4B |
| SCARBOROUGH TS | Solid Waste Management Services | State of Good Repair C03 | CW | $1K |
| Scarborough Village Streets Plan | active | — | — | — |
| Scarlett Road Bridge | active | bridges | — | — |
| Schreiber - Asset Management Program | Approved | — | — | $4K |
| Schumacher Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $1.1M |
| SCORRA Trail Creation Project | Approved | — | — | $3K |
| Scott Central Public Elementary School | Complete | Growth Related C05 | CW | $3.3M |
| Scott Young Public Elementary School | Complete | Growth Related C05 | CW | $5.9M |
| SCRUBBER AND TONNER CONNECTION IMPROVEMENTS AT WTP | Water Program | Service Improvement and Enhancement C04 | CW | $265 |
| Seaton 1 Catholic Elementary School | Under construction | Legislated C02 | CW | $36.8M |
| SECONDARY TREATMENT UPGRADES - ENGINEERING (FORMER | Wastewater Program | State of Good Repair C03 | CW | $179 |
| Seneca College - Centre for Innovation, Technology and Entrepreneurship | Complete | Service Improvement and Enhancement C04 | CW | $85.0M |
| Seneca College - King Campus Expansion | Complete | Growth Related C05 | CW | $0 |
| Seneca College - Mechatronics Simulation and Demonstration Centre | Complete | Service Improvement and Enhancement C04 | CW | $651K |
| Seneca Trail Public Elementary School | Complete | State of Good Repair C03 | CW | $4.1M |
| Separated Town of Gananoque Asset Management Project | Approved | — | — | $5K |
| Separated Town of Smiths Falls Asset Management Project | Approved | — | — | $6K |
| Separation of the West Nipissing combined sewer system | Approved | — | — | $4.6M |
| Sequin Trail Restoration - Huntsville to Parry Sound | Approved | — | — | $15K |
| Service and Digital Modernization-S3 scope change | Toronto Public Library | Service Improvement and Enhancement C04 | CW | $14K |
| ServiceNow | Technology Services | Service Improvement and Enhancement C04 | CW | $770 |
| Sewer Connections & Creek Improvements in the East Don River | active | water-sewer | — | — |
| SEWER REPLACEMENT - SUBWAY EXPANSION | Wastewater Program | State of Good Repair C03 | CW | $106K |
| SEWER REPLC - 2022-2023 PROGRAM | Wastewater Program | State of Good Repair C03 | CW | $-321 |
| SEWER REPLC - 2024 PROGRAM | Wastewater Program | State of Good Repair C03 | CW | $3K |
| Sewer Separation and Infrastructure Improvements at Oliver/Isabella/Major | Approved | — | — | $457K |
| Shannen Koostachin Public Elementary School | Complete | State of Good Repair C03 | CW | $14.4M |
| Shanty Bay Public Elementary School | Under construction | State of Good Repair C03 | CW | $18.4M |
| Sharon Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $23.7M |
| Shaw Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $1.5M |
| Shelburne - Asset Management Project | Approved | — | — | $3K |