Hjalmar Christensen (5 May 1869 – 29 December 1925) was a Norwegian writer and a prominent literary critic.

His brother Ingolf Elster Christensen served as a government official and a member of the Storting.

From 1893 to 1898, Christensen was an instructor at the Christiania Theater and lectured for several years at the Bergen Museum.

In 1898, the post as professor of literary history at the Royal Frederick University had become vacant.

His most noted book Fogedgården, Af en bygds historie (1911) featured a culture description of life in Førde.