Hertog is a Dutch ice cream brand, owned by the Anglo-Dutch Unilever conglomerate. It was first introduced by Willem den Hertog in the summer of 1976 in the Netherlands. In 1996, Unilever bought the brand, and continued selling it.

Willem den Hertog has been selling fresh cheese and eggs in Dirksland for years. To cool off in the warm summer of 1976, he started making ice cream.

Door-to-door sales were soon in great demand, everyone enjoyed the delicious ice cream. In 1987, due to the great success, it was time for a real ice cream factory in Melissant (South Holland) which he later, in 1996, sold to Unilever.

Through many product development and advertising campaigns, Hertog IJs really became known to the general public as an ice cream brand in the 1990s. To this day, Hertog IJs stands for delicious ice cream, prepared with the tastiest ingredients to enjoy together or alone.