Carl August Heinrich Ferdinand Oesterley was a German landscape painter who eventually specialized in scenes from Norway.

He was a native of Göttingen, the son of painter Carl Friedrich Wilhelm Oesterley. He attended classes at the Polytechnikum in Hannover, where he studied under his father. Beginning 1857, he attended the Kunstakademie (Art Academy) in Düsseldorf, where he studied painting under Ernst Deger and Eduard Bendemann.

During a visit to Lübeck in 1865, where he copied Hans Memling's Passion, he made some attempts at architectural and landscape painting. These turned out so well that from then on he dedicated himself to landscape painting. Beginning in 1870 he focused his artistic efforts mainly on Norwegian landscapes, for which he devoted several study trips. Together with his friend Carl Rodeck he also visited the Netherlands, Belgium and England. He lived in Hamburg and received a first-class medal from the Münchener Ausstellung (Munich Exhibition). He died in Altona-Blankenese, now Hamburg.