Cihangir is an affluent neighbourhood in the municipality and district of Beyoğlu, Istanbul Province, Turkey.

Today, the Cihangir Mosque, originally built in 1559 but reconstructed in 1889, offers views across the Bosphorus to Sarayburnu.

[4] In 2012, British newspaper The Guardian included Cihangir and neighbouring Çukurcuma in the list of the five best places in the world to live, next to Santa Cruz de Tenerife, in Spain; the district of Sankt Pauli, in Hamburg, the north coast of Maui, in Hawaii and Portland, in the U.S. state of Oregon.

In the second half of the 19th century, the increasing influx of non-Ottoman Europeans into Istanbul drove up real estate prices in the nearby Pera district in Beyoğlu, to which they were officially confined.

Some Europeans, however, acquired land in areas outside Pera such as Tophane, Fındıklı, and Cihangir, leading to a great deal of upmarket residential development in those neighbourhoods.

In the early twenty-first century, Cihangir became well-known for its cafes, artists, and bohemian culture.