I think that’s unlikely. I don’t think St. Peter composed it, either.
St. Gregory the Great considered it the work of some “scholasticus” (whether that’s the man’s name, Scholasticus, or the word for “scholar”, is up for debate). Others attribute the majority of its composition to Pope Gelasius I in the late 5th century.
The prayer is quite old. The saints mentioned in it suggest a composition before the fourth century: they are
apostles and
martyrs only, no
confessors. The veneration of confessors (those who suffered, but did not die, for the faith) was a later development than that of the apostles and martyrs; since the Canon mentions no confessors, it is presumed to have been composed before such veneration was practiced.
Parts of the prayer, some with slightly different wording, appear in the work
De Sacramentis attribute to St. Ambrose of Milan in the late fourth century. These are the parts surrounding the consecration: the “Quam oblationem”, the “Qui pridie”, the “Unde et memores”, and the “Supra quae” and “Supplices te” (these two were united as one in
De Sacramentis).
The canon was certainly revised by Gregory the Great, who added three clauses to the “Hanc igitur”, owing to the Lombard invasion of Rome: that God might “(1) order our days in [His] peace, and (2) command that we be delivered from eternal damnation and (3) counted among the flock of those [He has] chosen.”
I don’t think the Roman Canon is an original Latin composition from the apostolic age (or the age immediately following it). I think it is more likely a later work with parts translated from Greek.
But I’m not a
scholasticus.