Dubliner is a sweet mature cheese (aged over twelve months) manufactured by Carbery and marketed internationally under the auspices of the Irish Dairy Board under the Kerrygold brand. The cheese is named after the city of Dublin, although it is made in County Cork. It combines the sharpness of mature cheddar, the nuttiness of Swiss cheese, and the bite of Parmesan. The cheese was developed by John Lucey and his secret recipe is exclusively held by the company Carbery.

Dubliner cheese may contain natural calcium lactate crystals, which appear as small white pieces.

The flavour of Dubliner cheese is best preserved by keeping it in a well-sealed container and refrigerated. It does not do well after freezing. To maximize the flavor, Dubliner cheese should be taken from the refrigerator an hour before serving to allow it to warm to room temperature.