| Hassling-Ketling of Elgin | |
| First: | The Deluge |
| Last: | Fire in the Steppe |
| Creator: | Henryk Sienkiewicz |
| Portrayer: | Jan Nowicki (Fire in the Steppe) |
| Spouse: | Krystyna Drohojowska |
| Gender: | Male |
| Family: | Unknown |
| Religion: | Christianity |
| Nationality: | Scottish |
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. A Scotsman, Ketling moved to Poland where he became a Colonel of Artillery in service of the king of Poland John Casimir. 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.