Sadettin Dilbilgen was a philatelist who was born in Ottoman Macedonia. He was the childhood friend of Mustafa Kemal Atatürk.

This article does not cite any sources. (September 2010)

Dilbilgen was born to a Macedonian–Turkish family and lived close to the Marko's Monastery located in the village of Markova Sušica. At a young age he moved to France, where he was educated and stayed for 16 years. After the Turkish War of Independence, the majority of his family moved to Izmir, Turkey. In Izmir he worked as a French teacher and then began stamp-collecting during his spare time. He was to become one of Turkey's most important collectors.