Ketling (Hassling-Ketling of Elgin) is a fictional character in Henryk Sienkiewicz's novel Fire in the Steppe, the third volume of his award-winning The Trilogy.
Ketling married Krystyna Drohojowska, a former fiancée of his friend, Michał Wołodyjowski.
Ketling was killed in the Siege of Kamieniec Podolski, when he (together with Wołodyjowski) blew himself up in a gunpowder depot.
The historical personality on which the character was loosely based was certain Major Heyking, a mercenary from Courland and the commander of the Kamieniec Fortress during the said war.
In 1969 Jerzy Hoffman's film Ketling is portrayed by Jan Nowicki.