Marc Cécillon (born 30 July 1959) is a former French rugby union player and convicted murderer, who captained the national side on five occasions.
Cécillon, who played both number 8 and flanker, was known as the Quiet Man of French rugby.
In August 2004, Cécillon was arrested by French police for murdering his wife, whom he shot in front of 60 people at a party in Saint Savin (near to Bourgoin-Jallieu).
In September 2018 Cècillion was charged with "driving under the influence of alcohol, without a license and at excessive speed, violence against a person in a state of drunkenness and theft".
Cecillon reportedly assaulted the vineyard's owner and some other workers who tried to intervene before getting in a vehicle and hitting a parked truck.