Ali Kuşçu was a prominent 15th-century Ottoman astronomer, mathematician, and scholar. Born in Samarkand, he was known for his contributions to astronomy and his work on the Tusi couple, a mathematical model that helped explain planetary motion. He played a significant role in the development of astronomical instruments and techniques during his time. Kuşçu later moved to Istanbul, where he became a key figure in the Ottoman Empire's scientific community. He authored several important texts, including a well-known treatise on astronomy, which influenced future generations of scientists. His legacy continues to be recognized in the fields of mathematics and astronomy.