This guide summarizes every location in the Institute where you can find Ghosts, complete with images.
so please make use of it during your playthrough.
What happens when you find a Ghost?
← Ghost
These are child spirits that can be found in the Institute.
Simply shine your light on them until they vanish. If you find all 5, the Achievement “Institutionalized” will be unlocked.
They do not affect story progression, but completionists aiming for 100% will need to find them.
Ghost Locations
First Half – 3 Ghosts
Related guide → Institute (Early) Walkthrough
1/5
Found by turning right immediately after entering the Institute.

2/5
Found at the end of the hallway after neutralizing the plants and moving forward.

3/5
Found in the room beyond the point where you ring the gong and drop down.

Second Half – 2 Ghosts
Guide → Institute (Late) Walkthrough
4/5
Found slightly to the left on the staircase floor after a short break in the route.

5/5
Found behind the locked door.
Pick up the key inside the wall hole at the end of the hallway.

Related Guides
Here’s a collection of my other Little Nightmares III guides. Feel free to check out anything that catches your eye.