Astakos
- Tür: Antik Kent
- Kültür: Bitinya
- Yüzyıl: MÖ 3. yy, MÖ 8. yy
- Bölge: Türkiye, Marmara Bölgesi, Kocaeli, Başiskele
- Durum: Toprak Altında
- For other cities called Olbia, see Olbia (disambiguation)
Astacus /ˈæstəkəs/ (Greek Ἀστακός Βιθυνίας) is an ancient city in Bithynia; it was also called Olbia /ˈɒlbiə/. Its site is located near the modern Başiskele.[1][2]
- ^ Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 52, and directory notes accompanying. ISBN 978-0-691-03169-9.
- ^ Lund University. Digital Atlas of the Roman Empire.