Mariana's SuperMarkets in Las Vegas - Fresh Meat, Produce, Dairy, Groceries, Mariana’s is the hispanic supermarket for Las Vegas. Established in 1989, Mariana’s has built customer loyalty through quality foods at great prices. We have 4 stores across Las Vegas so you’ll never have far to go to get the freshest produce, the widest selection of meat and seafood and fruits and vegetables from across the world. Also, be sure to check out our Carniceria, Panderia, Cocina, Tortilleria and Juice Bar when you visit our stores.