The two men were on trial with three other rugby players, two of whom were also found guilty of rape on Friday.
All five men were once teammates at FC Grenoble.
30-year-old Loic Jams from France was found guilty of rape and sentenced to 14 years in prison.
34-year-old Rory Grice from New Zealand was found guilty of rape and sentenced to 12 years in prison.
A second New Zealander, 30-year-old Dylan Hayes, was given a two-year suspended sentence for failing to commit the crime.
All five defendants denied the charges against them.
