The Bosphorus or Bosporus is a major waterway in Istanbul, Turkey, that forms part of the Turkish Straits.
Bosphorus or Bosporus may also refer to:
Places Boğaziçi (Istanbul), the neighborhoods surrounding the Bosphorus in Istanbul, Turkey The Bosporan Kingdom, an ancient Hellenic state Bosporus (see), the ancient Crimean city and Latin Catholic titular archbishopric
Eastern Bosphorus, a strait in Russia Kerch Strait, Crimea, which was known as the Cimmerian Bosporus historically
Other uses Boğaziçi University, an institute of higher education in Istanbul, Turkey, whose name means Bosphorus in Turkish Le Bosphore Égyptien, French newspaper published in Egypt between 1882 and 1894