Guillou
# Guillou

Guillou is a surname of Breton origin. It may refer to any the following people:

Guillou derives from the Breton name Gwilhoù which is a hypocorism of the name Gwilherm which is known as William in English.

* Charles Guillou (1813–1899), American naval surgeon
* Fernand Guillou (1926–2009), French basketball player
* Jan Guillou (born 1944), Swedish writer and journalist
* Jean Guillou (1930–2019), French composer, organist, pianist, and pedagogue
* Jean Guillou (1931–2019), French gymnast
* Jean-Marc Guillou (born 1945), French footballer and football manager
* Patrick Guillou (born 1970), French football defender
