Martin's Food Markets is a chain of supermarkets operating in Maryland, West Virginia, Pennsylvania, and Virginia. They are operated by Giant-Carlisle and are owned by Royal Ahold, who also owns Stop & Shop and Giant of Landover supermarkets in the United States.
In 1998, when Ahold purchased Giant-Landover, some Martin's stores were closed and sold to other chains to comply with FTC regulations. These locations included stores in Frederick, Carroll, Harford and Cecil counties in Maryland, where the Giant of Landover name was seen as more dominant.
The chain, along with Giant of Carlisle, implemented the Bonuscard program in 2000. Around that same time, the chain began selling gasoline in front of their stores.All Martin's stores are open 24 hours, 7 days a week. Martin's is strong in its trade area, usually being first in market share.