Alphonse Du Breuil or Dubreil (21 October 1811 – May 1890) was a French botanist and horticulturist. He was born and died in Rouen. In the Jardin des Plantes de Rouen he started the first school for the care of fruit trees. From 1853 he was professor of arboriculture at the Conservatoire des arts et métiers in Paris, and from 1848 was professor of agriculture at the École d'Agriculture.