Sadettin is the Turkish version of the Muslim name Sa'd al-Din. It may refer to:
- Sadettin Erbil (1925–1997), Turkish actor
- Sadettin Ergeç, Iraqi Turkmen politician
- Sadettin Heper (1899–1980), Turkish composer
- Sadettin Kaynak (1895–1961), Turkish composer
This page or section lists people that share the same given name.
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