| Panda Shoes | Boots | facebook.com |
| Pannizza | Pizza & Pizzerias | — |
| Parc intérieur de Longueuil | Amusement Places | facebook.com |
| Parc Michel-Chartrand, Base de Plein Air Jean-Jeune | Camps | — |
| Parent Carmen | Massage Therapy | facebook.com |
| Party Sécure | Chauffeur Services | partysecure.ca |
| Pascal Couture | Couture, COUTURE | — |
| Patisserie Longueuil | Cakes | — |
| Patisserie Rolland | Bakeries | patisserierolland.ca |
| Patrick Boivin Avocat | Business Lawyers | avocatdaffaires.ca |
| Patrick Cournoyer | Accountants | — |
| Pause Détente Azur | Beauty & Fitness, Hairdressers & Beauty Salons | detenteazur.com |
| Pavage De Rome | Landscaping | facebook.com |
| Pavé Concept | Business Centres | — |
| PBSC Urban Solutions | Bicycle Stores | — |
| Peccadille | Chocolate | peccadille.com |
| Peintre Eric Décary | Home Improvement | — |
| Peinture Design | Painters | — |
| Peinture DVI | Painters | peinturedvi.com |
| Peinture Et Entretien Db Enr | Painters | — |
| Peinture Imperio | Painters | peintureimperio.com |
| Peinture Magique | Painters | — |
| Pelletier Claude | Dentists | claudepelletier.fr |
| Pensee Gourmande | Cakes | — |
| Peoplefluent | Information Technologies (IT) | peoplefluent.com |
| Perreault Francine | Medical Clinics | — |
| Pharmacie Dinh Hieu Luu | Pharmacy | pharmacieluu.com |
| Pharmacie Joseph Boutros Hejazi | Pharmacy | uniprix.com |
| Pharmacie PHLEHOUXNOIVO | Pharmacy | pharmacienadeau.com |
| Pharmacie PJC May Bessissow & Michel Desjardins Pharmaciens Propriétaires Affiliés | Pharmacy | brunet.ca |
| Philippe Couture | Couture, COUTURE | — |
| Photos Nickel | Tout Entreprises et services | facebook.com |
| Physio du Parc | Physiotherapy | physioduparc.ca |
| Physiothérapie & Ostéopathie Josée Ménard PHTDO | Physiotherapy | facebook.com |
| Physiothérapie Mathieu Lamarche | Physiotherapy | — |
| Physiothérapie St-Lambert Inc | Physiotherapy | — |
| Pierre Couture | Couture, COUTURE | — |
| Pierre Legault Pharmacy | Pharmacy | — |
| Pierre Moreau et Associés | Appraisers | reseau411.ca |
| Pigé Communication | Advertising Agencies | — |
| Piscines et Spas Poseidon | Health and Beauty | psposeidon.com |
| Pizza Hut | Pizza & Pizzerias | pixelcom.ca |
| Pizza Realto | Pizza & Pizzerias | pizzastlaurent.ca |
| Pizza Ria | Pizza & Pizzerias | — |
| Pizza Soleil | Pizza & Pizzerias | — |
| Place Desaulniers | Bingo Halls | placedesaulniers.com |
| Place Désormeaux | Shopping Mall | laplacedesormeaux.com |
| Place Longueuil | Tout Commerces au détail | placelongueuil.com |
| PLACE NORBERT | Apartment Rental, Apartments | — |
| Plafond Deko Design | Ceilings | — |
