| La Leche League, Online Service, Find a La Leche League Group | |
| La Villa Montessori School | Oakville |
| La Villa Montessori School, Licensed Child Care Centre | Oakville |
| Lab Rescue, Labrador Retriever Adoption Service | Oakville |
| Ladies Marathon Bridge Club of Oakville | Oakville |
| Lakeshore Woods Medical Clinic | Oakville |
| Lakeshore Woods Pharmacy | Oakville |
| Lakeside Volleyball Club | Oakville |
| Lakeview Foot Care, Mobile Service, Mobile Foot Care | Mississauga |
| Lakewood Montessori Christian School, Licensed Child Care Centre | Burlington |
| Lama Yeshe Ling Tibetan Buddhist Group, Burlington, Meditation Classes, Buddhist Philosophy and Prayer Services | Burlington |
| Landlord's Self Help Centre | Toronto |
| Landscape Ontario, Horticultural Technician 441C Apprenticeship | Milton |
| Lao Association of Ontario | Toronto |
| LaSalle Park Community Marina | Burlington |
| LaSalle Park Retirement Community | Burlington |
| Last Post Fund - Toronto | Toronto |
| Latow Photographers Guild | Burlington |
| Laureate College | Burlington |
| Laurier Medical and Walk In Clinic | Milton |
| Law Enforcement Complaints Agency | Toronto |
| Law Society of Ontario | Toronto |
| Law Society of Ontario, Law Society Referral Service | Toronto |
| Lawn Bowls Milton | Milton |
| Lawson Park Family Tennis Club | Oakville |
| Learning Blocks Montessori School, Burlington, Licensed Child Care Centre | Burlington |
| Learning Blocks Montessori School, Milton, Licensed Child Care Centre | Milton |
| Learning Blocks Montessori School, Oakville, Licensed Child Care Centre | Oakville |
| Learning Disabilities Association of Ontario | Etobicoke |
| Learning Through Love, Licensed Home Child Care Agency | Georgetown |
| Learning Tree Childcare, Licensed Child Care Centre | Georgetown |
| Legal Aid Ontario, Provincial Head Office, Legal Aid Ontario, Provincial Head Office | Toronto |
| Legal Aid Ontario, Refugee Law Office | Toronto |
| Legal Line, Legal Line Website | York |
| Leon Pharmacy, Pharmacy Services | Oakville |
| Les Coccinelles, Oakville - École élémentaire Patricia Picknell, Licensed Child Care Centre | Oakville |
| Les Coccinelles, Burlington - École Élémentaire Renaissance, Licensed Child Care Centre | Burlington |
| Les Coccinelles, EarlyON Child and Family Centre | Milton |
| Les Coccinelles, Milton - École élémentaire Dyane-Adam, Licensed Child Care Centre | Milton |
| Les Coccinelles, Milton - École élémentaire Sainte-Anne, Licensed Child Care Centre | Milton |
| Les Coccinelles, Oakville - École élémentaire catholique Ste-Marie, Licensed Child Care Centre | Oakville |
| Les Coccinelles, Oakville - École élémentaire du Chêne, Licensed Child Care Centre | Oakville |
| Les Petites Perles, Licensed Child Care Centre | Oakville |
| Lesbian Gay Bi Trans YouthLine, Text and Chat YouthLine | Toronto |
| Leukemia and Lymphoma Society of Canada - Ontario Region | North York East |
| Leukemia and Lymphoma Society of Canada - Ontario Region - First Connection Caregiver Support Program | North York East |
| LGBTQ+ Youth HeLP, Health Information Website | Ottawa |
| Lice Squad, Lice Removal Products and Services | Burlington |
| Lice Squad.com, Niagara Regional Franchise | Niagara Falls |
| Lifecare Rx Pharmacy & Specialty Compounding Centre | Oakville |
| LifeChurch | Burlington |
| LifeLabs, Oakville - Trafalgar Rd, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - Speers Rd W, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - Rebecca St, Medical Laboratory Services | Oakville |
| LifeLabs, Oakville - River Glen Blvd, Medical Laboratory Services | Oakville |
| LifeLabs, Milton - Commercial St, Medical Laboratory Services | Milton |
| LifeLabs, Milton - Bronte St S, Medical Laboratory Services | Milton |
| LifeLabs, Georgetown - Sinclair Ave, Medical Laboratory Services | Georgetown |
| LifeLabs, Georgetown - Hillside Dr, Medical Laboratory Services | Georgetown |
| LifeLabs, Oakville - Hospital Gate, Medical Laboratory Services | Oakville |
| LifeLabs, Colorectal Cancer Screening | Mississauga |
| Lifeline | Toronto |
| Lifemark - pt Health, Trafalgar Physiotherapy | Oakville |
| Lifemark Physiotherapy Burlington Brant, Burlington, Physiotherapy Services | Burlington |
| Lifemark Seniors Wellness | Mississauga |
| Lifemark Seniors Wellness, Halton and Peel Locations, Exercise and Falls Prevention and Osteoporosis Program | Mississauga |
| Lighthouse for Grieving Children and Families, Grief and Bereavement Support Services | Oakville |
| Limehouse Presbyterian Church | Halton Hills |
| Linbrook School | Oakville |
| Links2Care, Oakville - Head Office, Care at Home for Seniors and Adults with Disabilities | Oakville |
| Links2Care, Acton - Lakeview Villa Senior's Apartment Building, Supportive Housing | Acton |
| Links2Care, Acton - Wallace St, EarlyON Child and Family Centre | Acton |
| Links2Care, Acton Community Hub, Care at Home for Seniors and Adults with Disabilities | Acton |
| Links2Care, Acton Community Hub, EarlyON Child and Family Centre | Acton |
| Links2Care, Care At Home - Meals Programs - Congregate Dining | Georgetown |
| Links2Care, Care At Home - Meals Programs - Hot and Frozen Meals | Georgetown |
| Links2Care, Care In The Community - Community Volunteer Income Tax Program | Halton Hills |
| Links2Care, Care In The Community - Shop Assist | Halton Hills |
| Links2Care, Georgetown - James St, EarlyON Child and Family Centre | Georgetown |
| Links2Care, Georgetown - Joseph Gibbons Public School, Licensed Child Care Centre | Georgetown |
| Links2Care, Georgetown - Park Public School, Licensed Child Care Centre | Georgetown |
| Links2Care, Georgetown Community Hub, Care at Home for Seniors and Adults with Disabilities | Georgetown |
| Links2Care, Care At Home - Bathing Assistance | Oakville |
| Links2Care, Care At Home - Community Navigation | Oakville |
| Links2Care, Care At Home - Friendly Visiting and Calling | Halton Region |
| Links2Care, Care At Home - Home Help | Oakville |
| Links2Care, Care At Home - Home Maintenance and Repair | Oakville |
| Links2Care, Care At Home - Relief for Caregivers | Oakville |
| Links2Care, Connection in Action - Social Supports for Older Adults | Oakville |
| Lions Club of Milton | Milton |
| Lions Foundation of Canada Dog Guides, Dog Guide Programs | Oakville |
| Literal Change | Toronto |
| Little Feet Big Dreams Child Care Centre, Licensed Child Care Centre | Oakville |
| Little Hands Daycare Centre, Licensed Child Care Centre | Milton |
| Little Kids Day Care Centre, Oakville - Grosvenor St, Licensed Child Care Centre | Oakville |
| Little Kids Day Care Centre, Oakville - Kingsridge Dr, Licensed Child Care Centre | Oakville |
| Little Leaders Licensed Home Child Care Agency, Licensed Home Child Care Agency | Burlington |
| Little People of Ontario - LPO | Toronto |
| Little Treehouse Child Care Centre, Licensed Child Care Centre | Oakville |
| Live Life Well Care Services, In Home Care Services | Burlington |
| LiveYoung Mediclinic, Family Practice and Walk-in Clinic | Milton |
| Living Hope Church | Georgetown |
| Livita Retirement Residences, Queens Avenue Retirement Residence | Oakville |
| LMC Diabetes and Endocrinology, Oakville, Diabetes and Endocrinology | Oakville |
| LMC Pharmacy, Pharmacy Services | Oakville |
| Loblaw Pharmacy, Georgetown, Pharmacy Services | Georgetown |
| Loblaw Pharmacy, Milton, Pharmacy Services | Milton |
| Loblaw Pharmacy, Oakville, Pharmacy Services | Oakville |
| Loblaw Pharmacy, Oakville - Dundas St W (Fortinos), Pharmacy Services | Oakville |
| Local Transit and Bus Services in Halton Region | Halton Region |
| Lost Wallet, Burlington | Burlington |
| Lost Wallet, Oakville | Oakville |
| Lowville United Church | Burlington |
| LSV Pharmacy, Pharmacy Services | Burlington |
| Lung Cancer Canada | Toronto Downtown Central |
| Lung Health Foundation | North York East |
| Lyme Ontario | Ancaster |
| LymeHope | Burlington |
| Lymphedema Association of Ontario | Etobicoke South |
