| Around the word | Information Technologies (IT) | aroundtheword.com |
| Arrangespaces | Closet Organizers & Accessories | montrealclosets.com |
| Arrangespaces | Closet Organizers & Accessories | — |
| Arrondissement de Lachine | Tout Informations générales | montreal.ca |
| Arrondissement Plateau Mont-Royal | Tout Informations générales | montreal.ca |
| Arrondissement Saint-Laurent - Vill... | Tout Informations générales | montreal.ca |
| Arsenault Arpenteurs-Géomètres Inc. | Architects | arsenaultag.ca |
| Art & Talent | Art Galleries, Dealers & Consultants | facebook.com |
| Art Bouquet Mtl | Baskets | — |
| Art classes Montreal | Art Schools | — |
| Art Clo Ste-Marie.com | Artists | facebook.com |
| Art Coiffure Unisexe | Beauty & Fitness, Hairdressers & Beauty Salons | artshaircoiffure.com |
| Art d'y Voir | Tout Commerces au détail | artdyvoir.com |
| Art Deco | Art Restorations | — |
| Art Deco Buildings: Montreal | Tout Arts et divertissement | artdecobuildings.blogspot.com |
| Art Dentaire Nature - Christine Bovo Dentiste | Dentists | artdentairenature.com |
| Art gallery Carré d'artistes | Art Galleries, Dealers & Consultants | carredartistes.com |
| Art L'Eau Coiffure | Beauty & Fitness, Hairdressers & Beauty Salons | facebook.com |
| Art Networks | Answering Machines & Equipment | — |
| Art of Peter Flinsch | Tout Arts et divertissement | peterflinsch.com |
| Art Pop | Tout Commerces au détail | artpopmontreal.com |
| Art public Montréal | Tout Arts et divertissement | artpublicmontreal.ca |
| Art Sanji Ltée | Artists | — |
| Art Souterrain | Tout Événements spéciaux | artsouterrain.com |
| Art Studio Artelle | Art Schools | — |
| Art Supply Store, Concordia University | Art Schools | — |
| Art Sylvain Tremblay Inc | Artists | — |
| Art Tattoo Show Montréal | Tout Événements spéciaux | arttattoomontreal.com |
| Art X Terra | Art Galleries, Dealers & Consultants | — |
| Art-Bali | Arts & Crafts Materials & Supplies | — |
| Artcorps Inc | Circus Troupes | artcorps.ca |
| Artdyp | Arts & Crafts Stores, Arts & Crafts Supplies, Arts & Crafts Materials & Supplies | facebook.com |
| Arte & Farina | Bakeries | artefarina.ca |
| Arteau Papiers et Emballages | Adhesive Tapes | arteau.com |
| Artec Planchers | Flooring | artecplanchers.ca |
| Artec Planchers - Artec Flooring | Flooring | — |
| ARTEC TECHNOLOGIES | Aerospace | artec-spadd.com |
| Artech Camps Canada | Camps | artechcamps.com |
| Artefactum | Architectural Drawing | facebook.com |
| Artelia Group | Tout Entreprises et services | arteliagroup.ca |
| Artelys Canada | Information Technologies (IT) | artelys.com |
| arteVISTA | Tout Arts et divertissement | artevista.net |
| Artex Design | Furniture Stores | artexcanada.com |
| Arthri-Solution | Physiotherapy | facebook.com |
| ArthroLab Inc. | Life Sciences and Health Technologies (LSHT) | arthrolab.com |
| Arthurs | Breakfast Restaurants | — |
| Arthéfer Enr | Balconies | — |
| Artic Glacier Inc. | Agri-food | arcticglacierinc.com |
| Article 19 Group | Information Technologies (IT) | article19.com |
| Articles de Promotions Lerner Inc. | Tout Commerces au détail | lernerpromotions.com |
