Ortaköy is a neighbourhood in the municipality and district of Beşiktaş, in Istanbul Province, Turkey. It is situated on the European shore of the Bosphorus, the strait that separates the European and Asian sides of Istanbul.
The neighbourhood had a population of 9,121 as of 2024. As part of the Beşiktaş district, it falls within the central area of Istanbul rather than the Artvin region in northeastern Turkey.