The Main Deli Steak House, also known simply as Main Deli is a delicatessen and steakhouse located in Montreal, Quebec. The restaurant was established in 1974 and currently located on Saint-Laurent Boulevard right across the street from their main business rival, the famed Schwartz's Montreal Hebrew Delicatessen. The two restaurants are often compared against each other in their patronage and the flavours of their Montreal-style smoked meat.

The deli remains a family business. Some of the regular clients of the Main Deli in the past included Stanley Lewis and Leonard Cohen as well as Céline Dion, who has gone on to become their competition as one of the owners of Schwartz's.