Carl Christian Frederik Jacob Thomsen (6 April 1847 – 4 October 1912) was a Danish painter and illustrator.

He then attended the Royal Danish Academy of Fine Arts under Wilhelm Marstrand, graduating in 1871.

His earlier works include the genre paintings Ved eksamensbordet (At the Examination Desk, 1874) and Moder og datter (Mother and Daughter, 1875).

Unlike some of his contemporaries, Thomsen did not follow any of the modern trends from Paris but maintained his Historicist approach, often painting literary subjects.

[3] As an illustrator, he contributed woodcuts to both books and journals including works by Adam Oehlenschläger, Johan Ludvig Heiberg, Steen Steensen Blicher and B.S.