Carl Gustaf von Essen (20 March 1815 – 22 July 1895) was a Finnish Pietistic priest. Essen got into influence of Pietism at an early age. He studied theology but his views which differed from the official line of the church delayed his ordination. As a priest, Essen was an active member in the Pietistic movement. In the early 1850s he got into doctrinal conflict with the leader of the movement and got closer to the official church. Essen took part in development of the Finnish hymnal, both in Finnish and Swedish, and he represented Estate of Clergy in Diet of Finland.