Hans Henrik Jæger (2 September 1854, Drammen, Norway – 8 February 1910, Oslo) was a Norwegian writer, philosopher and anarchist political activist who was part of the Oslo (then Kristiania)-based bohemian group Kristianiabohêmen. He was prosecuted for his book Fra Kristiania-bohêmen, convicted and sentenced to 60 days' imprisonment in a supreme court ruling in 1886. He and other bohemians tried to live by the nine commandments he had formulated in Fra Kristiania-bohêmen.
The following year he was forced to flee Norway. He had been sentenced to 150 more days in prison after the Norwegian government learned that he had sent 300 copies of Fra Kristiania-bohêmen to Sweden under the pretence that it was a volume of Christmas stories.
He was a friend of Edvard Munch and was the subject of one of Munch's paintings.