The Ottoman constitution of 1876 (Ottoman Turkish: قانون اساسى‎; Turkish: Kanûn-u Esâsî; English: "Basic Law") was the first constitution of the Ottoman Empire.
Konstitusi Utsmaniyah tahun 1876 (Turki Utsmaniyah: قانون اساسى,"hukum dasar"; bahasa Turki: Kanûn-u Esâsî) adalah konstitusi yang pertama dari Kesultanan Utsmaniyah (Kekaisaran Ottoman).