| Christian Gerling | |
| Birth Date: | 10 July 1788 |
| Birth Place: | Hamburg |
| Death Place: | Marburg |
| Nationality: | German |
| Field: | Physicist and astronomer |
| Work Institution: | University of Marburg |
| Alma Mater: | University of Göttingen |
| Doctoral Advisor: | Carl Friedrich Gauss |
| Doctoral Students: | Julius Plücker |
| Known For: | Geodetic triangulations |
Christian Ludwig Gerling (10 July 1788 - 15 January 1864) studied under Carl Friedrich Gauss, obtaining his doctorate in 1812 for a thesis entitled: Methodi proiectionis orthographicae usum ad calculos parallacticos facilitandos explicavit simulque eclipsin solarem die, at the University of Göttingen. He is notable for his work on geodetics and in 1927 some 60 letters of correspondence between Gerling and Gauss on the topic were published. He is also notable as the doctoral advisor of Julius Plücker.
Gerling, whose father was also called Christian Ludwig Gerling and was a pastor at the St. Jacobi church, was born in Hamburg and attended the Johanneum. In 1817, he became a professor of mathematics at the University of Marburg.