| Laurentian Hills Asset Management Project | Approved | — | — | $4K |
| Laurentian University - Campus Modernization | Complete | Service Improvement and Enhancement C04 | CW | $60.7M |
| Laurentian University - New McEwen School of Architecture | Complete | Growth Related C05 | CW | $0 |
| LAWRENCE ALLAN REVITALIZATION PLAN - EXTERNAL | Water Program | Growth Related C05 | CW | $-4,546 |
| Lawrence Heights Revitalization | Under Construction | Housing | York Centre | $520.0M |
| Lawrence Park Neighbourhood Road & Stormwater Management Study | active | water-sewer | — | — |
| Lawrence Park Transportation Plan | active | parks | — | — |
| Leachate Control System | Solid Waste Management Services | Legislated C02 | CW | $997 |
| Leamington District Public Secondary School | Complete | Service Improvement and Enhancement C04 | CW | $26.7M |
| Leamington Pollution Control Centre Upgrades | Approved | — | — | $3.9M |
| Leaside Bridge to Danforth Avenue Cycling Connections | active | bridges | — | — |
| Leed & Grenville Asset Management Program | Approved | — | — | $10K |
| Legacy Oak Trail Public Elementary School | Complete | State of Good Repair C03 | CW | $4.9M |
| LEGAL SERVICES SALARIES | Water Program | State of Good Repair C03 | CW | $1K |
| Lennox & Addington - Asset Management Project | Approved | — | — | $9K |
| Lighting -Various | Exhibition Place | State of Good Repair C03 | 10 | $150 |
| Lillian Berg Public Elementary School | Complete | State of Good Repair C03 | CW | $1.2M |
| Limerick Forest Trails - Rehabilitation, Upgrades and New Trail Construction | Approved | — | — | $26K |
| Lincoln Catholic Elementary School | Under construction | Service Improvement and Enhancement C04 | CW | $24.4M |
| Line 1 Capacity Enhancement- SI | Toronto Transit Commission | Service Improvement and Enhancement C04 | CW | $150K |
| Listowel Eastdale Public Elementary School | Under construction | State of Good Repair C03 | CW | $8.8M |
| Little Angels 1 | Complete | — | — | $250K |
| Little Current Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $328K |
| Local Road Hard Surfacing | Approved | — | — | $88K |
| London Bridge Child Care | Complete | Growth Related C05 | 14 | $1.5M |
| Longfields-Davidson Heights Public Secondary School | Complete | Service Improvement and Enhancement C04 | CW | $14.0M |
| Lower Simcoe Underpass Flood Protection Study | active | bridges | — | — |
| Lower Yonge Park Development | Parks, Forestry & Recreation | Growth Related C05 | 10 | $5K |
| Loyalist College Health and Wellness Centre Renovation | Complete | State of Good Repair C03 | 11 | $3.2M |
| Loyalist Township - Asset Management Project | Approved | — | — | $6K |
| Lucan Elementary School | Under construction | Legislated C02 | CW | $25.0M |
| MAC - Building Condition Assessment (Future) | TO Live | State of Good Repair C03 | 18 | $180 |
| MAC - Lighting Control Console (all theatres) | TO Live | State of Good Repair C03 | 18 | $412 |
| Macaulay Tree House | Complete | State of Good Repair C03 | 13 | $1.9M |
| Machin Asset Managment Project | Approved | — | — | $4K |
| Mackenzie House Interiors | Economic Development & Culture | State of Good Repair C03 | 13 | $250 |
| Madawaska Valley District Public Secondary School | Complete | — | — | $3.1M |
| Malala Yousafzai Public Elementary School | Complete | State of Good Repair C03 | CW | $29.1M |
| Malvern West Streets Plan | active | — | — | — |
| Maple Leaf & Rustic Neighbourhood Streets Plan | active | — | — | — |
| Mapleton Asset Management Project | Approved | — | — | $5K |
| Markham Centre Public Elementary School | Under construction | State of Good Repair C03 | CW | $27.2M |
| Markstay Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $504K |
| Marmora and Lake - Asset Management Project | Approved | — | — | $4K |
| Marmora Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $3.7M |
| Marshview Elementary Public School | Complete | State of Good Repair C03 | CW | $13.5M |
| Martin Grove Road Cycling Connections | active | cycling | — | — |
| Martin Street Public Elementary School | Complete | State of Good Repair C03 | CW | $12.2M |
| Mary Street Public Elementary School | Complete | Service Improvement and Enhancement C04 | CW | $7.3M |
| Masonville Public Elementary School | Complete | State of Good Repair C03 | CW | $6.0M |