Marmite's advertising campaign, created by DDB UK claims people either "love it or hate it", although the Danes will have no say on the issue either way.
The ban is likely to anger the British community living in Denmark, as Marmite tends to be popular with expats.
It has been banned because the Danish authorities are clamping down on foods fortified with added minerals.
Marmite is high in vitamin B and is fortified with folic acid, which helps prevent spinal problems in unborn babies, but has also been linked to cancer growth.
Marmite will now join other products, such as Horlicks, Ovaltine and Farley's Rusks, which are also prohibited in Denmark.
The Danish law has been in force since 2004, but Marmite has previously escaped any ban.
However, it will now no longer be available on supermarket shelves in the country.
Unilever was unavailable for comment.
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