| Jardin d'Enfants La Soleillerie | Childcare Services | lasoleillerie.com |
| Jason Neto - Courtier Immobilier | Appraisers | facebook.com |
| Jazzercise Saint-Lambert - Claudine | Fitness Gyms | facebook.com |
| Je Dum | je | — |
| Jms-Concept | Computer Accessories & Supplies | — |
| Johnston Charles E | Accounting Services | curriki.org |
| Joron Veilleux Inc | Accounting Services | facebook.com |
| Ju Riau | ju | — |
| Kinatex St-Lambert | Physiotherapy | — |
| Klassik.Co | Airports | facebook.com |
| L'Ame Du Vin Inc | Candles | lameduvin.com |
| L'Echoppe des Fromages | Tout Commerces au détail | lechoppedesfromages.com |
| L'Échoppe Gourmande | Cakes | facebook.com |
| La Boîte Thérapeutique | Not Profit, Medical Clinics | facebook.com |
| La Fac De Saint-Lambert | Art Galleries, Dealers & Consultants | facebook.com |
| La Fondation des Amis de la bibliothèque de Sa int-Lambert | Not Profit, library, Library | facebook.com |
| La Gazouillerie | Childcare Services | — |
| La Maison Colibri | Cleaning Services, Cleaning Service | maisoncolibri.ca |
| La Paroisse Saint-Lambert | Churches & Other Places of Worship | parstl.org |
| Laurentian Bank - Saint-Lambert branch | Banks | banquelaurentienne.ca |
| Lavigueur Luc Chiropr | Chiropractors | — |
| Le balcon d'art | Tout Commerces au détail | balcondart.com |
| Le Centre Kinesis Ltée | Massage Therapy | centrekinesis.com |
| Le Club Bridge De Saint-Lambert Inc | Associations | facebook.com |
| Le Groupe Gelinas Architectes | Architects | — |
| Le Marché Aux Fleurs Du Village | Baskets | facebook.com |
| Le Riverside Café | Candles | labouticaire.com |
| Le Sans Soucy Enr | Apartment Rental, Apartments | facebook.com |
| Le Tarot Lumière | Astrologers & Psychics | letarotlumiere.com |
| Le586 Homme Inc | Boutiques | — |
| Lechoppe Des Fromages Inc | Cheese | lechoppedesfromages.com |
| Les Appartements St Lambert Inc | Apartment Rental, Apartments | facebook.com |
| Les Laines Saute-Mouton | Tout Commerces au détail | lainesautemouton.com |
| Les Marchés Emily Philip Desmarais | Not Profit, Grocery Stores | — |
| Les Marchés Emily Philip Desmarais | Not Profit, Grocery Stores | — |
| Les Porduits Porcan Ltee | Car Repair | por15canada.com |
| Librairie Le Fureteur Inc | Book Stores | lefureteur.leslibraires.ca |
| Lili-les-Bains | Beauty & Health Spas | — |
| Lilie par Dragone | Boutiques, Bridal Shops | liliepardragone.ca |
| Loisirs-culture et vie communautaire | Not Profit, library, Library | — |
| Loisirs-culture et vie communautaire | Not Profit, library, Library | — |
| Lookommunication Inc | Advertising Agencies | lookommunication.com |
| Loondance Gallery | Art Galleries, Dealers & Consultants | facebook.com |
| Luc Plante Architecture design | Architects | lucplante-architecte.com |
| Luc Tittley | Analytical & Testing Laboratories | — |
| Luis Carlos Diaz Massotherapéute | Massage Therapy | facebook.com |
| M Lb | lb | — |
| Madame BĂ© | Astrologers & Psychics | madamebe.ca |
| Magasins JL Taylor Inc | Clothing Stores | taylor.ca |
| Maison Du Pull | Boutiques | maisondupull.com |
