Claude Antoine Jean Georges Napoléon Coste (June 28, 1805 – February 17, 1883) was a French guitarist and composer.

Napoléon Coste was born in Amondans (Doubs), France, near Besançon. He was first taught the guitar by his mother, an accomplished player. As a teenager he became a teacher of the instrument and appeared in many concerts in the Franche-Comté. In 1829, at the age of 24, he moved to Paris where he studied under Fernando Sor and quickly established himself as the leading French virtuoso guitarist. However, the demand for guitarists was in decline and, though his brilliance provided financial stability, he failed to find a publisher for his music. As such, he had to fund its publication himself.