Lycée Notre Dame de Sion Istanbul

Lycée Notre Dame de Sion Istanbul (Turkish: Notre Dame de Sion Özel Fransız Lisesi) is a French private high school located in the Harbiye, Şişli neighbourhood of Istanbul, Turkey. It was founded in 1856.

The high school was established in the Ottoman Empire as a missionary school for girls only. It was later transformed into a co-educational status. The Medium of instruction from preparatory class through twelfth grade is in the French and Turkish language, and takes four years after a preparatory class of one school year.

NDS Schools (Turkish: Neslin Değişen Sesi Okulları or NDS Okulları), established in 2001 by the Notre Dame de Sion High School Education Foundation, offers French-language education for preschool, primary, and middle school levels in Istanbul suburb Bahçeşehir, Başakşehir.