Assassin's Creed 3 Save Game Location

Windows

Assassin's Creed 3 save games can be found on Windows here:

C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\savegames\[user_id]\54\

Linux

Assassin's Creed 3 save games can be found on Linux (Proton) here:

~/.steam/steam/userdata/[user_id]/208480