Guillan

Guillan may refer to:


 * Guillan, Burkina Faso, a village in Cassou Department, Ziro Province, Centre-Ouest, Burkina Faso
 * Guillán River, a river in Cuenca Canton, Azuay Province, Ecuador

Grapes

 * Gouais blanc, a white French grape variety also known as Guillan
 * Malbec, a red wine grape variety also known as Guillan
 * Muscadelle, another white French wine grape that is also known as Guillan