Civilization 5 Save Game Location

Windows

Civilization 5 save games can be found on Windows here:

C:\Users\[user_name]\Documents\My Games\Sid Meier's Civilization 5\Saves\

Steam:

Civilization 5 save games installed through Steam can be found on Windows here:

C:\Program Files (x86)\Steam\userdata\[user_id]\8930/

Linux

Civilization 5 save games can be found on Linux (Proton) here:

~/.local/share/Aspyr/Sid Meier's Civilization 5/Saves/