Rumelifeneri (named after the lighthouse Rumeli Feneri) is a neighbourhood in the municipality and district of Sarıyer, Istanbul Province, Turkey.

[2] Rumelifeneri is a coastal village located at the extreme northwest (i.e., European side) of the Bosphorous Strait.

[3] The village is named after a local lighthouse, which is attested in portolans and literary sources since at least the 15th century.

Its Greek inhabitants named it Phanarion (Φανάριον, "lighthouse"), often in the diminutive Phanarakion (Φαναράκιον).

[3] In 1768, a fortress was built by a Greek engineer for the Ottoman Empire (Rumeli Fener Kalesi), possibly on older foundations.