Saves & config
Hollow Knight: Silksong Save File Location
Hollow Knight: Silksong keeps its saved games in %USERPROFILE%\AppData\LocalLow\Team Cherry\Hollow Knight Silksong on Windows. Paths for macOS, Linux are listed below. Copy the whole folder to back a save up; paste it back to restore it.
Save games
3Windows
On Steam the saves sit in a sub-folder named after your Steam user ID; non-Steam builds use a sub-folder called default.
macOS
On Steam the saves sit in a sub-folder named after your Steam user ID.
Linux
Native Linux build (the developer lists it as Linux). On Steam the saves sit in a sub-folder named after your Steam user ID.
%APPDATA% style variables expand to your own account, and it works
even though AppData is hidden.
Backing a save up properly
Close the game first. A save folder copied while the game is running can catch a file mid-write, and the copy then loads as a corrupt save weeks later when you need it.
If the game uses Steam Cloud, close Steam entirely before restoring an old folder. Steam compares timestamps on launch and offers a choice between the local files and the ones on its servers; restoring while Steam is open often means the cloud copy quietly wins and the folder you just put back is overwritten.
These paths are written by hand rather than imported, and a game update can move them. If one is wrong on your machine, tell us and it will be corrected.
Quick answers
Hollow Knight: Silksong saves
Where are Hollow Knight: Silksong save files stored?
%USERPROFILE%\AppData\LocalLow\Team Cherry\Hollow Knight Silksong. Paste that path into the address bar of File Explorer and it will open the folder — the environment variables in it expand to your own user folder.