Knud Knudsen was a Norwegian educator, author, linguist and philologist, known as "The Father of Bokmål". He is best known for having assembled from Dano-Norwegian one of the two official written versions of the Norwegian language, Bokmål, one of the two official written versions of the Norwegian language.

Bokmål is one of the official written standards for the Norwegian language, alongside Nynorsk. Bokmål is by far the most used written form of Norwegian today, as it is adopted by 85% to 90% of the population in Norway. There is no countrywide standard or agreement on the pronunciation of Bokmål and the spoken dialects vary greatly.