Alphonse Louis Nicolas Borrelly (December 8, 1842 – February 28, 1926) was a French astronomer.
He joined the Marseille Observatory in 1864.
In the course of his career, he discovered a number of asteroids and comets, including the periodic comet 19P/Borrelly.
The French Academy of Sciences awarded him the Prix Valz (Prix Valz) for 1903 and the Prix Lalande for 1909.