Mask Shards are to Hollow Knight what Heart Pieces are to The Legend of Zelda. Find four of them and you'll earn yourself an Ancient Mask that will boost your health by one. There are 16 Ancient Masks in Hollow Knight, so if you find all of them that's four extra health points.

In this guide, we're going to detail the location of every single Mask Shard in Hollow Knight so you can find them all and give yourself a serious boost. These count towards your maximum completion percentage too, so if you're aiming for 100%, this is a task well worth undertaking.

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Hollow Knight - Mask Shard Locations

Mask Shard Location Requirement To Unlock
Buy from Sly in Dirtmouth 150 Geos
Buy from Sly in Dirtmouth 500 Geos
Buy from Sly in Dirtmouth 800 Geos / Shopkeeper's Key
Buy from Sly in Dirtmouth 1,500 Geos / Shopekeeper's Key
Bretta's house in Dirtmouth Rescue Bretta from Fungal Wastes
Deepnest, near Mantis Lords Monarch Wings
Right side of Queen's Station Mantis Claw
Grey Mourner in Resting Grounds Complete Delicate Flower quest
Behind a wall in The Hive Trick a Hive Guardian into breaking the wall
Dropped by Brooding Mawlek Beat Brooding Mawlek
Grubfather in Forgotten Crossroads Rescue five Grubs
Crystal Guardian reward on second encounter Monarch Wings
Swim left under the main path in the northwestern section of the Royal Waterways -
Seer in Resting Grounds Collect 1,500 Essence
Found in the Stone Sanctuary in Greenpath -
Under the False Knight in Forgotten Crossroads, by the Goams -

This guide is part of our Hollow Knight walkthrough series to help you complete the game 100%. It includes Hollow Knight guides with all Mask Shard Locations, every Vessel Fragment Location, all Spells Locations, every Ability Location, and all Nail Upgrades & Arts Locations. We've also got guides featuring Boss Locations & a Full Moves List and all Notch Upgrades & Charm Locations.