Marc Carbonneau (born 29 May 1933) was a member of the Liberation Cell of the Front de libération du Québec (FLQ).
During the October Crisis of 1970, he was part of the Liberation Cell of the Front de libération du Québec that kidnapped British Trade Commissioner James Cross.
In exchange for Cross' release, Carbonneau and the other members of the group were flown into voluntary exile in Cuba.
He was sentenced to 20 months in prison and 150 hours of community service, a lighter penalty than that of three other FLQ kidnappers who returned before he did.
The sentencing judge outlined mitigating factors: Carbonneau's guilty plea, his renunciation of past actions, his progress in social reintegration, his lack of commitment to the FLQ's ideology, and his age.