Çimpe Castle (, Cinbi; , Tzympē) was a medieval fortification on the Gallipoli peninsula in modern Turkey. Its site is located along the Istanbul Caddesi between Bolayir and Gallipoli, commanding the narrowest point on the peninsula. Although the medieval castle no longer stands, its position remained important. The same narrow stretch it commanded — the "Lines of Bulair" — was fortified by the French and English during the Crimean War; the Turkish X Corps during the First Balkan War; and the Turkish 5th Army during the Gallipoli Campaign in World War I.