Dede Efendi, also known as Dede Efendi, was a prominent Turkish composer and musician from the late 18th to early 19th century. He is best known for his contributions to Turkish classical music, particularly in the genre of Türk sanat müziği. His works often featured intricate melodies and rich harmonies, reflecting the cultural influences of his time. Born in Istanbul around 1778, Dede Efendi became a significant figure in the Ottoman Empire's music scene. He served as a court musician and composed numerous pieces, including sema and şarkı. His legacy continues to influence contemporary Turkish music, and he is celebrated for his artistic achievements.