- "An arrow created using ancient technology ancient technology. To be struck with one is to be consigned to oblivion in an instant. It deals devastating damage-even against Guardians."
- — Hyrule Compendium
Ancient Arrows are items from The Legend of Zelda: Breath of the Wild. They are a type of arrow and Ancient Soldier Gear developed by the Sheikah Guardian researcher Robbie using ancient Sheikah technology as Anti-Calamity armaments designed to combat corrupted Guardians.
If any non-boss or non-Guardian enemy is struck by one, they will be blasted into oblivion in an instant, without a trace. Against Guardians, Ancient Arrows deal particularly devastating damage, being crafted from the same technology, and a single arrow directly to the eye can instantly destroy almost any guardian enemy, although that is not the case with bosses. Though powerful, using them on wildlife or common enemies prevents them from dropping materials and/or equipment as they are obliterated when hit. However Guardians will drop still drop Guardian Parts when killed with one. As a result Ancient Arrows are one of the strongest weapons and arrows in Breath of the Wild. Presumably the obliteration of an enemies' materials and equipment was added by the developers to discourage their use against non-Guardians as it prevents Link from obtaining items dropped by enemies as without this drawback, Ancient Arrows would be way overpowered and would remove the difficulty of obtaining powerful or rare items (materials & equipment) from enemies way too easy as it would allow Link to defeat strong enemies such as Lynels, silver/gold enemies, and Yiga Blademasters instantly. However ignoring this drawback, Ancient Arrows are great for eliminating dangerous enemies such as Lynels and Yiga Blademasters which allows Link to save his other equipment (with exception of his bows as firing one will effect the bow's durability as it does will all arrows) at the cost of losing any spoils they may drop. They are also useful for farming ancient materials and "Guardian" series weapons wielded by Guardian Scouts as they make combating all Guardian types much easier. Additionally by farming ancient parts, Link will have ancient materials to create more Ancient Arrows.
Link is able to obtain Ancient Arrows by taking part in the side quest "Robbie's Research" and restoring power to the Ancient Oven Cherry by lighting the Furnace at the Akkala Ancient Tech Lab with the Blue Flame. After power is restored to her, Cherry can forge Ancient Arrows at the Akkala Ancient Tech Lab without even talking to Robbie or completing the Side Quest (as it is only completed after Link speaks to Robbie after lighting the furnace). Robbie will also reward Link with a free sample of 3 Ancient Arrows for restoring power to Cherry. Link can also receive one from Beedle though only after taking part in said Side Quest.
A single Ancient Arrow costs 90 Rupees, 2 Ancient Screws, 1 Ancient Shaft, and 1 Arrow. A bundle of three Ancient Arrows costs 250 Rupees, 6 Ancient Screws, 3 Ancient Shafts, and 3 Arrows. A bundle of five Ancient Arrows costs 400 Rupees, 5 Ancient Springs, 5 Ancient Shafts, and 5 Arrows.
Ancient Arrows are the only non-holy weaponry (the Master Sword, Bow of Light, and Twilight Bow) that can harm Dark Beast Ganon. Link can add its picture to the Hyrule Compendium by shooting an Ancient Arrow at the ground, then taking the Ancient Arrow's picture with the Camera Rune as it is lying on the ground. It appears as entry number 349 in the Compendium's Equipment section. Its entry's additional effects section states "The ancient arrowhead deals massive damage".